fabiochiu/medium-articles huggingface dataset:
Participate in our Pre-Sale and get a free FuzeX Card.
By: Fuzex Team
Tags: Blockchain

Our Pre-Sale has just begun, and to say thank-you to all of those contributing we’re offering a free FuzeX Card to all of our Pre-Sale participants.

The minimum purchase in the Pre Sale is 5ETH, and contributors as well as receiving their FXT Tokens (+25% Bonus) will also receive a FuzeX Card for every 5ETH contributed, too.

So to help you on your way to becoming an FXT Token holder and a FuzeX Card owner, we’ve prepared a few quick links and run through of what you need to know.

Pre-Sale Participation

To participate make sure that you read our Contribution Manual first. It will take you through every step you need to go through to contribute. To participate, you will also need to register on our site and go through the KYC (Know Your Customer) process. As we are a registered company in Switzerland this process is a must.

FXT Token Utility:

As well as receiving a FuzeX Card, you will also receive FXT Tokens. For every 1 ETH contributed (Min. Purchase 5ETH) you will receive 12,000 FXT Tokens + a 25% Bonus during the Pre-Sale period. If you want to know more about the utility of the FXT Token please read this.
Top five most-read blogs of 2020
Tags: Blog, Highlights, Data

As we close out 2020, we are sharing our top five most-read blogs of 2020. Whether you are looking for some reading material during the holiday season, or curious to learn more about our work, take a look at our most popular stories this year.

In first place:

Three steps to designing an effective phone survey that reaches respondents

Let’s say that you are in charge of a phone survey. You get a list of phone numbers, sit down in a comfortable chair, and begin making phone calls. Sounds simple enough. It is unfortunately not that easy. In this blog post, you will learn more about the steps, experiments, and findings that have helped us increase our respondent reach, focusing on components of phone surveys.

Successful callback protocol

2. How to maximize phone surveys for remote data collection

Amidst COVID-19, phone surveys provide an efficient and cost-effective opportunity for remote data collection. As of December 2019, our team in India had been leveraging Data on Demand to experiment with phone surveying. In this blog, they share what they learned from India to help others initiate or expand remote surveying methods.

Research phases for piloting

3. Dear Development Community: A letter from IDinsight’s new CEO

On the 1st of June, we officially welcomed Ruth Levine as IDinsight’s new CEO. In this blog, Ruth shares her story and what she looks forward to accomplishing with IDinsight.

Ruth Levine

4. COVID-19 pilot study finds signs of economic distress outside India’s metropolitan areas

After the start of India’s lockdown, our response team leveraged Data on Demand to conduct a rapid survey with 300 respondents from four districts in North India. In this blog, you can read the team’s preliminary findings on the economic impact and health knowledge amidst COVID-19.

5. Six recommendations for facilitating remote workshops with virtual whiteboards

Because all meetings have gone online during the COVID-19 crisis, we are sharing some recommendations for using virtual whiteboards from a three-day remote workshop with a government partner.
This week in #Scala (March 25, 2019)
By: Petr Zapletal
Tags: Distributed Systems, Spark, Functional Programming, Thisweekinscala, Scala

This week in #Scala (March 25, 2019)

Welcome to the new edition of #ThisWeekInScala!

This blog aims to keep you up to date with the latest news from the world of Scala and Reactive programming.

It has been a week since the previous #ThisWeekInScala so lets catch-up on the latest Scala & Reactive happenings…

New Content

Updated Software

Alpakka 1.0-RC1 is out!

Akka Management 1.0.0 is released

GraalVM 1.0-rc14 is in

sbt 1.3.0-M2 is available for testing “super shell”, layered ClassLoader, improved watcher, etc.

In case you are looking for new challenges, pay attention, because Disney Streaming Services is hiring!
Permission.io launches new e-commerce platform where consumers can earn crypto while shopping online
Tags: Ecommerce, Blockchain, Data Privacy, Cryptocurrency, Shopping

Permission.io, the permission-based platform and creator of the cryptocurrency ASK, has officially launched its e-commerce marketplace. The Permission Marketplace is an e-commerce platform where merchants compensate consumers for their time and data. Instead of merchants paying internet giants to reach consumers, merchants compensate the consumer directly with ASK.

The Permission Marketplace operates in a similar vein as well-known e-commerce platforms, connecting users with products from major retailers. The key differences are that consumers enjoy an interruption-free shopping experience, gain easy entry into the crypto space, and earn ASK for each purchase made, advertisement viewed, and other interactions within the platform.

Consumers are not the only ones who benefit from the Permission platform. The marketplace enables merchants to quickly adopt permission-based marketing methods and dialogue directly with consumers, establishing trust and developing stronger, long-term relationships. Merchants benefit from increased ROI, and users are compensated for their time and for the data that they proactively share and control.

“The Permission Marketplace is the first of many applications for ASK,” says Charles Silver, CEO of Permission.io. “As the world of digital commerce grows and evolves, the trends of interruption, data centralization and exploitation are giving way to decentralization and permission. The biggest companies in the world have been built by interrupting us and extracting our data without asking permission. ASK fuels a new kind of economy, one that recognizes and properly compensates an individual for the most precious commodities of all — their time and data.”

The Permission Marketplace is Permission.io’s first use case for earning ASK and for creating an ecosystem for businesses and consumers to conduct commerce on a permission basis. The ASK model can be expanded into recruiting, surveys, dating, gaming, email marketing and community building.

The e-commerce platform has more than 300,000 active ASK wallets while in beta.

For more information about Permission.io and the Permission Marketplace, please visit https://permission.io/.

About Permission.io

Permission.io is a deep technology company with extensive intellectual property, including nine US database-optimization patents. The company has created a global cryptocurrency (ASK) that drives a transparent, trustworthy economy, one in which consumer engagement is achieved by asking Permission rather than by the current interruptive and exploitative commercial norms.
I am Healed When…
By: Owais Ali
Tags: Poetry, Meditation, Kids, Healing, Children

When the door is knocked on weekend

I am guessing it right. My heart beats faster

I am healed when she comes towards me with her arms open

I am healed when he raises arms to hug me

All the stress is gone, and I am not part of the world when I have hugged

I am healed when I see her crying cutely when I don't let her use my phone

I am healed when I meet, after a week or more

All my stress, all my worries, and all the dark go in the dark and I am healed finally
San Clemente — A Seaside Poem. When beaches closed due to COVID-19…
By: Janell Hanf
Tags: California, Seaside, Poem, Beach, San Clemente

If you have never had the pleasure of visiting the beautiful seaside city of San Clemente in Southern California —

If you don’t already have your own favorite shoreline paradise, and need some assistance imagining what I try to describe, here’s the poem again, with pictures.

These are all photos that I have taken on various walks along the sand and beach trail.
Crypto mining merchandise by minerstat
Tags: Cryptocurrency Mining, Crypto, Cryptocurrency, Mining, Minerstat

We are celebrating 2 years of the official relaunch of minerstat and our September was very busy preparing all regular updates, improvements, and also something very special - a new crypto mining merchandise collection!

We have now patched and prepared everything, so you also have a new option for Christmas gifts for yourself or your crypto mining friend(s). To start, we have prepared a collection of three designs and three versions of the minerstat logo.

As it is not our primary business to sell merchandise, we are hosting the shop with Redbubble and all products can be bought through the Redbubble store, while minerstat gets the percentage of every sale made. Redbubble is the one taking care of the quality of the products, printings, delivery, and returns.

Crypto Mining Haven

The New Miner has ascended beyond fiat money while others kept chasing it. He is now on a way to the crypto mining haven where his mining kingdom awaits him.

There are more than 40 products available for this design, including T-Shirts, hoodies, sweatshirts, stickers, iPhone and Samsung cases and skins, artboards, art prints, canvas prints, posters, pillows, pin, spiral notebooks, and magnets.

Browse all products

Crypto Mining Venture

Take a journey through the crypto mining venture.

There are more than 50 products available for this design, including T-Shirts, hoodies, sweatshirts, stickers, iPhone and Samsung cases and skins, artboards, art prints, canvas prints, posters, clocks, pillows, mugs, pin, spiral notebooks, and magnets.

Browse all products

Anatomy of a Miner

Take a look inside your GPU mining rig.

There are more than 40 products available for this design, including T-Shirts, hoodies, sweatshirts, stickers, iPhone and Samsung cases and skins, artboards, art prints, canvas prints, posters, spiral notebooks, and magnets.

Browse all products

Take a look at our crypto mining merchandise page to uncover all designs and direct links to products.

Happy mining!

Join minerstat

Want to take your mining monitoring and management to the next level? Join minerstat
15 Things That Cost More Than Trump Paid in Taxes in 2016
By: Jack Shepherd
Tags: Humor, Politics, Trump, Money, Election 2020

15 Things That Cost More Than Trump Paid in Taxes in 2016

You can buy a lot of cool stuff for $750

The New York Times just reported that self-proclaimed billionaire Donald Trump paid $750 in taxes the year he won the presidency, and another $750 the first year he was in office. There will be many, many well-reasoned and thoughtful takes this week about just how tiny of an amount of taxes that is to pay for a famously rich man with a golden toilet when the rest of us can’t even afford NFL Sunday Ticket. But there will not be enough takes about just what the President is otherwise selflessly denying himself with that $750, so here are just a very few of the wonderful things in this weird, wonderful world we live in that cost more than Donald Trump pays in income tax.

An American-made giant 5-foot stuffed penguin.

Price: $979.90, & free shipping!

Buy it here.

Extremely patriotic pajamas for the whole family.

Price: $1,999.00 for this “holiday must-have.”

Buy it here.

A 2-person horse costume.

Price: $1,245.00.

Buy it here.

A friggin’ suit of armor that you can actually wear!

Price: $899.00 (“Great for LARP!” says the description.)

Buy it here.

A “post-modern decorative lamp” of a dog pooping on the floor.

Price: $1400.00.

Buy it here.

A LEGO Millenium Falcon.

Price: $974.61. For real, think about the selflessness of a man who would deprive himself of this genuine treasure just to pay his dues to Uncle Sam.

Buy it here.

Cat Tree Tower Cat Climbing Frame Cat Scratch Tree Towers Amusement Tower Tree Wooden Huts Lounger Sleeping Cat Bed Cozy and Comfortable Multi-Level Apartment Cat Trees

Price: $4,956.58. To be honest, this seems expensive for just a cat tree and also the name of it is giving me a headache.

Buy it here.

A futuristic chair that is making this guy in a red sweater so very happy and comfortable.

Price: $799.00.

Buy it here.

A novelty grim reaper chair?

Price: $1269.74. Why would you want this? I would rather give this money to the IRS. They clearly need it!

Buy it here.

A HairMax laser hair growth treatment cap.

Price: $999.00. I’m not a scientist but I don’t think this works.

Buy it here.

A beanie baby!

Price: $3500.00. Remember these? Now they’re so expensive that even the President can’t afford one because he has to set aside estimated taxes for next year.

Buy it here.

A 2-CD Encarta set.

Price: $741.86 (but shipping is going to put you over). I hope your CD-ROM drive is working!

Buy it here.

A (hopefully limited-edition?) copy of the Obama-Biden mystery “Hope Never Dies.”

Price: $902.81. (You can get the sequel, “Hope Rides Again,” for just $9.99, which is actually quite a bit less than billionaire president Donald Trump paid in taxes in 2016 and 2017.)

Buy it here.

A rare, hardcover copy of “A Theory of Tax Fairness,” by Jorge H Moromisato.

Price: $1036.00.

Buy it here.

And a signed first edition of Donald J. Trump’s “Think Like a Billionaire.”

Price: $855.58.
Sorry, Wrong Number
Tags: Humor, Funny, Technology, Comics, Cartoon

Written by

Almost famous cartoonist who laughs at her own jokes and hopes you will, too.
Confusion
By: Urvi Karani
Tags: Hindi, Heart, Poetry, Illumination

Photo by Nick Fewings on Unsplash

मौसम की लुकाछिपी देखो

हम कंबल ओढ़ के सर्दी का इंतजार ही करते रह गए।

ख़्वाहिशों की साज़िश देखो

हम मोहब्बत मे खुदको भुलाते ही रह गए।

Translation:

Look at the hide and seek this season plays

I kept waiting for winters wearing a blanket.

Look at the conspiracy this hope creates

I kept forgetting myself in love.
Cranberry & Sage
By: Jessica Lee Mcmillan
Tags: Ritual, Poetry, Nature, Celebration, Healing

POETRY

Cranberry & Sage

A free-verse poem on ritual

Ash green & ruby blaze

the fire & aftermath

cranberry & sage

Flood crimson & dry sprig

of velvet blessings,

the smoky savour strip

ghosts of inertia

Astringent fruit crush

well met river red

decking the valley

bejeweled in thanks

The twin colours

arrest all diversion

in refuge for faculty

to this moment & zest

of abundant sensation

unveiling bare life

and past of pasts

Mind dedicated

to revelations

of single-minded

senses reining
Dolby TrueHD comes to HTPC’s
By: Eric Vanderburg
Tags: Htpc, Truehd, Dolby

Aimee and I use my home theater a lot and so when my DVD player started skipping on disks I got frustrated. I tried cleaning it but good hygiene is not the cure for every electronic woe. Normally I would just replace the DVD player. After all, DVD players are around $20 these days. This DVD player, however, is built into the projector so I searched for a different solution.

I decided to upgrade my Home Theater PC (HTPC). It is already connected to the projector so I don’t have to worry about plugging and unplugging devices from my projector. Of course, it needed a few upgrades. Since I always watched DVDs on the projector DVD player I never needed one on the HTPC so I built it with a standard CD-Rom. I plan to upgrade to Blu Ray and 1080p video sometime so I figured I should just install a Blu Ray drive in it. With a little price shopping, I found one on sale and ordered it. I started to get excited about Blu Ray audio. Since my projector is only 720p I will not get to experience the great video quality from Blue Ray until I eventually upgrade but I already have a 7.1 system hooked up. I figured I would hear a marked improvement when watching Blu Ray disks but then I learned some bad news. Most of the 7.1 cards out there do not support Dolby TrueHD, the impressive audio standard I was looking forward to.

I plan to upgrade to Blu Ray and 1080p video sometime so I figured I should just install a Blu Ray drive in it. With a little price shopping, I found one on sale and ordered it. I started to get excited about Blu Ray audio. Since my projector is only 720p I will not get to experience the great video quality from Blue Ray until I eventually upgrade, but I already have a 7.1 system hooked up. I figured I would hear a marked improvement when watching Blu Ray disks but then I learned some bad news. Most of the 7.1 cards out there do not support Dolby TrueHD, the impressive audio standard I was looking forward to.

I had to rectify this situation so I began looking for a card that could handle it. Low and behold, I found the ASUS Xonar HDAV1.3 with Dolby TrueHD support. It is a PCI card with 2 HDMI ports (one input and one output) and an S/PDIF port on it. This card can provide the true Blu Ray audio experience and it even comes with a low profile adapter for smaller cases.

Benchmark Reviews has a nice review of the card here: http://benchmarkreviews.com/index.php?option=com_content&task=view&id=341&Itemid=59&limit=1&limitstart=0
[筆記] 把玩 express-validator 在伺服器端做表單驗證
By: Mike Huang
Tags: Nodejs, Notes, Express Validator, Express, Backend Development

根據官方的文件說明：

express-validator is a set of express.js middlewares that wraps validator.js validator and sanitizer functions.
[Wallet] Why an investor must use IONIA -a book transaction -
Tags: Wallet, Bitcoin

It’s already been a news story, a book transaction!!!

What is the book transaction?

It’s not like the coins were coming in and out of your wallet.

It’s only recorded in the books.

The Coins I bought are stored in my exchange wallet, not in my personal wallet.

I mean, the coins I bought are not in my wallet, but the exchange has them!!!!

What the…!!!??

No! It’s in my wallet on my exchange…

There will be some of you, but you can look at it like this.

The money I deposited at the bank is recorded in my bank account, but it’s actually in the bank safe

So what if the bank safe is stolen?

If you lose your wallet with lots of coins?

And the exchange says, of course, we don’t do books.

Because of doubt…

If the exchange’s going to be hacked,

If you feel like the coin in my wallet is not my coin

I think keeping the coins in my wallet would be a much better rational choice!

Multi-Wallet Ionia has no risk of hacking because there is no central server.

The only person who can touch the coin in the wallet is the owner.

How do you like it? Don’t you think you’ll try it right now?
Rails 2009 vs. 2017
By: Noel Rappin
Tags: Web Development, Ruby on Rails, Ruby, Software Development

Rails 2009 vs. 2017

Yep, I’m comparing them again…

So, I had enough fun with comparing RailsConf to older RailsConfs last year that I thought I’d do it again.

Same rules. There are 20 talk titles listed here, 10 of them are from the 2009 RailsConf in Las Vegas, 10 of them are from the 2017 program in Phoenix next week. I tried to avoid talks that specifically referenced versions or tools that would date them, like “What’s new in Rails 3” and the like. I may have deliberately tried to pick things that were surprising.

Build an App, Start a Movement The Effective Remote Developer What Killed Smalltalk Could Kill Ruby Too We’ve Always Been Here: Women Changemakers In Tech Working Effectively with Legacy Rails Code What’s My App Really Doing In Production Below and Beneath TDD: Test-Last Development and other Real World Test Patterns A Deep Dive Into Sessions What Makes Ruby Go: An Implementation Primer Postgres at any Scale Discussion Panel: Women in Rails In Relentless Pursuit of REST Quality Code With Cucumber Decouple Your Models With Form Objects Modeling Workflow in Ruby and Rails Panel: Ruby’s Killer Feature: The Community The Future of Deployment: A Killer Panel How to Write Better Code Using Mutation Testing It’s Not Always Sunny In the Clouds: Lessons Learned What Comes After Solid? Seeking Holistic Software Quality

Answers

If you read this last year, you probably remember I didn’t get very creative with the random ordering. But I’ll put some words here so it isn’t obvious. Anyway, all the odd numbers are from 2009 and all the even numbers are from 2017.

I don’t have any grand conclusions, but I did want to drop some random comments.

The “Smalltalk/Ruby” talk was Bob Martin’s keynote. Since it was a keynote, it was actually recorded. I’m kind of afraid to rewatch it. I don’t always agree with him now, but I remember being really fired up at the end of that talk.

The “Below and Beneath” was my first RailsConf talk. Sadly not recorded. But I still have the slides, and I think it’s actually held up pretty well, and I think I could re-deliver it at the drop of a hat.

The Women In Rails panel from 2009 included Sarah Mei, in what might have been (according to her blog) her first RailsConf talk as well.

It’s funny that in last year’s post, I specifically mentioned legacy as something that the community wasn’t working on and there was a talk on that topic in 2009. The only 2009 JavaScript talk, though was a talk on testing JavaScript. There were more 2009 talks on JRuby than JavaScript.

I’m not really a Vegas guy, and I remember feeling like it was a really weird and awkward place for a tech conference, especially for a community that was talking about having more women. I also remember not leaving the hotel — and really wanting to go to an In n’ Out because I’d never been, and not being able to coordinate timing for some reason.

So, no new big conclusions, but I do like these snapshots of what we found important. And I’m looking forward to seeing people in Phoenix next week.
Pardon Me
By: Samantha Kemp-Jackson
Tags: Short Story, Movies, Fiction, Life, Flash Fiction

Pardon Me

Sorry to bother you

She got up from her seat with dread. Why did this always happen to her? She had her popcorn, her drink and her M&Ms all ready to go. The movie was about to start.

Yet, like clockwork, she had a creeping, sickening feeling in the pit of her stomach. Movie snacks wouldn’t help right now. She had to get out.

“Pardon me,” she said sheepishly to each and every one of the five people she had to practically step over to get to the aisle. “Sorry,” she added for good measure.

The restroom was not far, just a few steps away, yet it felt like a marathon on her journey. Her destination couldn’t come soon enough. This was all too much.

A wave of relief washed over her, if only momentarily, as she closed the door to the stall.

“Breathe in, breathe out,” she reminded herself. Mindfulness was a powerful stress reliever, she had recently learned.

“It’s okay,” she said out loud, not to anyone in particular. “You can do this.”

Returning to her seat seemed easier. Her back was straighter and she no longer averted her face from the gazes of those who viewed her with irritation.

No need for apologies, she thought to herself as she picked up her popcorn and descended into her seat.
“It Was Open Season, So We Gave It A Shot”.
By: Tree Langdon
Tags: Self Improvement, Guns, Relationships, Life, Covid 19

Staff at Wikwemikong are finding creative ways to lift the spirits of elders during the coronavirus pandemic.

It’s been a tough year for most of the residents.

Cut off from family and friends, they’ve really missed the social contact. The staff were determined to create a new community within the home.

This First Nations community always brings creative activities to their seniors and they listen carefully to their wishes and concerns.

One nurse heard a couple of the older guys talking about how much they missed going hunting.

She was determined to bring the hunting experience to them.

First, she recruited other members of the staff and they created a mock forest at one end of the dining room. They gave each participating elder a nerf gun and some ammunition, ensuring they knew how to use them.

Then they dressed up as deer and moose, and moved in and out of the trees, giving the elders a real hunting challenge. The residents had a fun time shooting at the frolicking ‘animals’.

“We heard it was open season so we gave it a shot.” Said a resident of the Wikwemikong Nursing Home in Ontario, Canada.

The looks on their faces were priceless.

The joy of being able to do something they loved was clearly reflected on their faces. All of the participants agree it’s one of the best activities they’ve had. Even the onlookers had a great time, cheering on their friends the deer, or their friend the hunter.

That’s not all they’ve been doing.

In the past few weeks, they’ve organized a game of Wheel of Fortune, where they challenged residents from another home nearby. They’ve updated the way they do their penny fair to accommodate COVID-19 measures, held a photo shoot for all the female residents, and hosted a lip sync battle.

In October, Tim Hortons, a popular coffee chain, opened on Manitoulin Island. The staff at the center organized a “drive-thru” cart serving coffee and the famous Tim-bit donuts.

A nursing home in Ohio organized a similar deer hunt, inspired by videos they saw online. The Activity Director at Continental Manor was setting Christmas trees up in the hall for decorating. She saw an opportunity to create a fun event so they had staff dress up with deer antlers and snouts and encouraged the residents to shoot them with nerf guns.

The staff agreed they had as much fun as the residents, maybe more.
How to get into cryptocurrency in under 7 minutes.
By: Nick Place
Tags: Cryptocurrency, How To, Blockchain, Bitcoin, Emerging Technology

“When I first learned that you pay anyone anonymously across the internet with no fees, I was searching the pants off of google for a working link.” — SWIM

Fig 1. Source

In 2005, this is what it looked like to set up a blockchain wallet.

So you want to crypto, eh? Well you must frist understand that your “wallet,” yup, your digital “wallet,” is your passport to the cryptoverse. Lose that, and you’re screwed.

Your wallet’s private key cryptographically signs everything you do on the blockchain. It’s like your signature. You become the only one who can act on your behalf.

Day 1: Private key hygiene

Baby turtles going out to the ocean. Source

I found a sweet app called Trust for iPhone and for Android that lets your keep your private keys secure on your phone. On the computer, I use Metamask for Chrome and you can download the official Ethereum wallet. Make absolutely sure to back up your private key in multiple safe locations.

You can also buy hardware wallets that keep youtr private key safe behind yet anotjher layer of cryptography. Trezor, Ledger and Yubico onto some really cool stuff. Yubico is the cheapest option.

Step 2: Moving $$$ into your wallet

Once you have a wallet, Coinbase is the easiest way to get crypto currency. Download it on the App Store or Google Play. But you don’t need Ethereum OR Bitcoin to play on the new internet…

If you’re interested in trading on cryptocurrency exchanges and markets, chack out Radar Relay, a project by a good friend of mine.

Step 2.5: Decentralized apps.

The most interesting part about blockchain (in my opinion) is the opportunity to decentralize networks, location services, social media, chat, impact investment, organizations, and communities. The decentralized internet puts its users in control of their private data, their content, and their currency. It usurps the power weilded by mega-corporations and tech giants that monetize your data and attention.

Cryptography isn’t all business though. Cryptokitties is a game where you breed and trade cryptographically unique kitties.

You can keep up to date with new ÐApps on State of the ÐApps and DApp News . And of course, never stop searching!

Step 3: Get a job

Websites like Steemit and DTube allow users to get paid for their own content. You can follow me on Steemit here. Gitcoin pays you to contribute to open-source.

Links

This week, I’m ommiting links and instead pointing you towards the Facebook page which is where I’ll be sharing all kinds of interesting news and developments from the emerging tech world!
Tree Traversals in Kotlin
By: Jonathan Montwell
Tags: Depth First, Binary Tree, Kotlin, N Ary Tree, Preorder Traversal

Below are the classic binary tree recursive traversal methods embedded into our BinaryNode class. We use a companion object to minimize our space complexity, which is comparable to static methods in Java. You may wonder why we allow for a nullable BinaryNode to be passed into each of these methods. I settled at this option for the sake of clarity. Because the left and right nodes are mutable objects, we would need to create immutable references to them before passing them to the recursive calls. You could say our base case is an empty leaf node.

The wonderful part about Kotlin is that we can define our action as a lambda expression. Below you will see an action defined as a parameter, which uses the value of the node being passed in as the first parameter. Our action here returns Unit, which is comparable to returning void in Java. Let’s look at how we can use this lambda expression.

Forgive me for my crude test tree!

As you can see we can pass the root node to our traversal functions and define the action we can take when processing the value of the node as we pass through it. In our last call, just by changing our lambda expression, we define a Postorder search.

What about N-ary trees?

Below, similarly, is our Node with a list of children. We implement DepthFirst and BreadthFirst with stack and queue respectively. Our action is defined just as above.

Here we have a similarly awful test tree. We call the traversals the same way as we do with BinaryNode. This time getting extra fancy using when in our search variation.

Thank you for taking the time to reach this point. I’m always open to constructive criticism or suggestions on expanding the article. I created the above using IntelliJ Community Edition and you can download the project at the following link.

https://github.com/montwell/KotlinTreeTraversals
What is Bitcoin ?
Tags: Cryptocurrency, Articles, Bitcoin, Thailand, Bitkub101

Bitkub.com is a new generation digital asset and cryptocurrency exchange platform that offers advanced cryptocurrency exchange services

Follow
Waves Launches Cryptocurrency Payment Gateway Framework
By: Waves Tech
Tags: Cryptocurrency, Trading, Bitcoin, Wavesplatform, Blockchain

New framework allows developers to quickly and easily deploy gateways to integrate new cryptocurrency coins within their ecosystem. With that, users can then begin trading on the Waves Decentralized Exchanged (DEX).

Digital payment gateways share a universal base structure that is common for all cryptocurrency coins. While developers are often tasked with rebuilding this structure for each gateway introduced on a blockchain ecosystem, the Waves framework provides a ready-to-build structure so developers are only required to provide the top-level code unique to their coin’s blockchain protocol.

“Gateways have always been a key feature behind the Waves ecosystem, — said Sasha Ivanov, founder & CEO of Waves. — This new framework provides developers with a simple and effective tool to get their payment gateways up and running on Waves, with almost no technical overhead required. It’s our goal to make this process as seamless as possible, helping users bring new coins and liquidity into the DEX and creating a more diverse ecosystem that in turn benefits the wider cryptocurrency community”.

Once introduced, the Waves payment gateways allow users to deposit different currencies and receive dedicated Waves tokens in exchange that are backed 1:1 by funds held securely within the gateway. The tokens can be transferred and traded freely, or sent back to the gateway in return for the funds they represent.

The Waves gateway framework is implemented using Python, designed to further simplify the coding process for developers. Developers are able to integrate new gateways with Python by implementing a special Python application programming interface (API) for their unique coin blockchain, or through standard JSON-RPC, REST or similar APIs.

The payment gateway framework is now available for implementation on the Waves ecosystem.
CoinTiger Weekly Highlights (2019.5.13–5.19）
Tags: Investment, Cryptocurrency, Blockchain, Bitcoin, Report

About CoinTiger:

CoinTiger is a global and innovative digital assets exchange platform which provides multi-cryptocurrency trading service including multi-language support for blockchain enthusiasts around the world.

Since the platform was launched, it has continuously iterated with a steady upgrade and now has an increasingly mature ecosystem comprising web, iOS, and Android clients application and comprehensive exchange services including cryptocurrency trading, Ticker Capital, Labs, IEO, and voting for listing program. Currently, CoinTiger users have topped 2 million and are from more than 100 countries and regions in Asia, North America, Africa, and Europe.

LINKS

Website: https://www.cointiger.com/en-us/#/index

Facebook: https://www.facebook.com/CoinTigerEX/

Twitter: https://twitter.com/CoinTigerEX?lang=en

Medium Blog: https://medium.com/@cointiger

Reddit: https://www.reddit.com/r/CoinTigerExchange/

Telegram Channels

English: https://t.me/cointiger_en

Mandarin: https://t.me/CoinTiger_cn

Vietnam: https://t.me/CoinTiger_VN

Russian: https://t.me/cointiger_russian

Announcement Channel: http://t.me/cointiger_annoucements

CoinTiger APP Links

Official Link: https://www.cointiger.com/en-us/#/app_download

Android: https://play.google.com/store/apps/details?id=com.cointiger.exchange

iOS: https://itunes.apple.com/hk/app/cointiger/id1366562802?mt=
A Regular Here
By: Sophie Lucido Johnson
Tags: Family, Comics, Relationships, Sophie Lucido Johnson

A person who writes and draws and eats her feelings.

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EYE-POPPING JAMES HARREN COVER FOR THE WEATHERMAN REVEALED
By: Mike Gagnon
Tags: Comics, Image Comics, Press Release, Comic Books

PORTLAND, OR, 07/19/2018 — Image Comics is pleased to reveal a jaw-dropping, limited THE WEATHERMAN #3 cover featuring eye-popping artwork by James Harren (RUMBLE), with colors by Nathan Fox.

In THE WEATHERMAN #3, Nathan and Cross are cut off, on the run, and hunted by The Marshal, as they try to stay alive long enough to find Nathan’s lost memory and the key to stopping another world-ending attack. But they’ll have to survive each other first…

THE WEATHERMAN #3 hits stores on Wednesday, August 15th. The final order cutoff for comics retailers is Monday, July 23rd.

WEATHERMAN #3 Cover A by Fox — JUN180272

WEATHERMAN #3 Cover B by Martin — JUN180273

WEATHERMAN #3 Cover C by Harren, colors by Fox (Limited) — JUN188042

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ABOUT IMAGE COMICS

Image Comics is a comic book and graphic novel publisher founded in 1992 by a collective of bestselling artists. Image has since gone on to become one of the largest comics publishers in the United States. Image currently has six individuals on the Board of Directors: Robert Kirkman, Erik Larsen, Todd McFarlane, Marc Silvestri, Jim Valentino, and Eric Stephenson. It consists of five major houses: Todd McFarlane Productions, Top Cow Productions, Shadowline Comics, Skybound Entertainment, and Image Central. Image publishes comics and graphic novels in nearly every genre, sub-genre, and style imaginable. It offers science fiction, fantasy, romance, horror, crime fiction, historical fiction, humor and more by the finest artists and writers working in the medium today. For more information, visit www.imagecomics.com.
A Kiss Before Morning
By: Greg Dodgen
Tags: Love, Cozy, Poetry, Romance, Kiss

A Kiss Before Morning

A kiss before morning

Waking at dawn

They’re wrapped in a bunch

Akin to a ball

Neither will move

Neither will budge

Except for a kiss,

Caress, or nudge

Linked at the soul

Joined at the heart

Common of mind,

They don’t want to part

But part they shall not

Together this day

They’ll cherish each moment

And slowly make way

For pleasures anew

Abroad and at home

The universe smiled

And granted them come

Together today

And even at dusk

A kiss before morning

Waking at dawn
Space and Light
By: Paul Mulliner
Tags: Mindfulness, Philosophy, Meditation, Yoga, Poetry

Space and light

are woven into our awareness

of every moment.

And as we listen to the cafe music

and chat and daydream about the day,

moments of our transient experience

vibrate and resonate through

the single conscious space

inside everyone.

And though sometimes

the passing moment

seems surrendered

to every random thought,

being consciously present now

helps us know that only now is real

and the present moment

is all there ever is,

and will ever be.

And inwardly paying attention

turns out to be the key,

that opens us into the inner space,

where we can dissolve into

the one conscious heart

in all of us, and find

the silent resonance

that brings clarity

and wisdom to our life.

And space and light

are woven into our awareness

of every moment.
Returning
By: Farah Egby
Tags: Stuck In A Rut, Poetry, Reflections Of Life, Realizations

Yawning shadows fall deeply

Breaths

Laden sweeps of air

Whisper between shapes

Familiar and foreign

Fanning out like tangled strings

Ways

Cross and criss and curve

Inwards and outwards

Have I been here before?

Soundless leaves curling damply

Drops

Yesterday’s tears fall

From an unseen sky

Returning to the same spot

Footprints in the burnished mud

Stamped

Betray what I knew

But wished to deny

I travel but end up here
I am awake!
By: Darshak Rana
Tags: Poetry, Spirituality, Spiritual Secrets, Life, Self

With a ray of divinity,

you punctured my dream of material desires!

I feel I am alive.

I am awake from my deepest sleep,

My heart arose from the darkest night,

I awoke to feel a new refreshing reality,

And, discovered an unknown secret,

That, I am a soul in this perishable body.

I am eternal and this body returns to ash.

I am a free bird in this cage of flesh.

I have wings that can flutter.

Those wings of introspection

can make me fly,

To my highest home,

Without this bodily baggage.

With this profound knowledge,

In a single moment, I became free.

Free from the clutches of physical attraction.

And I no longer long for the material desires.

Now, the only one thing I aspire

is

Peace, peace, and only peace…
DApps 101
Tags: Dapps, Crypto, Cryptocurrency, Blockchain, Bitcoin

In the world of blockchain, cryptocurrencies get all the attention. But dapps are what blockchain is all about!

What are dapps?

‘Dapps’ = ‘decentralized applications.’ Told you it was cooler. Quick recap — blockchain is a distributed ledger that no single person controls. Dapps are built on a blockchain. Because of this, dapps are apps that no single person or entity controls. This is huge! Who controls a dapp? Everyone. And, I do mean everyone. The creators. The programmers. The users. All those people have a say. There is no centralized control over a dapp.

Why do I care?

You know when you use a social media website, and then somewhere down the road you get updated terms of conditions you must agree to? That’s because a centralized group of people decided that they want to change the way you use the website. They may also want to change the way they use your data. When this happens you are left with two choices: accept the new conditions or stop using it. Not fair! So, if a website decides they want to start selling your personal data, or making big changes, you don’t get much say over their decision. With dapps, you do! You can see what changes are being made, when, by whom, and why. You may even be able to vote on it. How cool is that?

Example please?

Example time! YouTube. Come on…you know YouTube! YouTube is a centralized app. YouTube controls everything about their site. If YouTube decided to stop monetizing content (basically, YouTube makes money based off of peoples’ uploads), it could, and you couldn’t do much about it. However, if there were a dapp version of YouTube, you’d be able to vote on if that happened or not.

More details

We covered the basics of dapps, but there’s more. The definition of a dapp is still changing because it is so new. For now, there are five basic criteria that need to be met for an application to be considered a dapp:

Be completely open-source, without any one person or group owning a majority Have rules for future changes, and all changes must be voted on by the users. You have control! Keep records of the application and store it in a public blockchain Use bitcoin or a unique currency — like Ethereum The application usually generate tokens, but it is not required

You can read more about dapps here: https://www.coindesk.com/information/what-is-a-decentralized-application-dapp/

The CLEARR :

Expect to see more Dapps in the App Store and discussed over cocktails.
Team Zero Weekly Newsletter
By: Zero Currency
Tags: Internet, Technology, Blockchain, Bitcoin, Computer Science

In terms of exchanges, firstly, we have been awarded 4 out of 5 stars on the Cryptopia Exchange thanks to the latest round of deliverables we are finalising at the moment in the Android Mobile Wallet, and also Web Wallet.

Secondly, another bit of great news is that we have also been listed this week on DigitalPrice Exchange, which is really positive. We are also in the running for listing on the CoinPulse and Shardax exchanges, but will need to rally the votes in order to be successful in these voting campaigns.

We’ve shared the links further down the page, so if you have the time, please do head on over and cast a vote to help us along the way.

This brings our exchange listings now to:

Cryptopia

Trade Satoshi

Barterdex

QIEX

Crex 24

DigitalPrice

And voting underway for:

CoinPulse

Shardax

Please remember that our aim as the development team is to deliver a transparent project that can be recognised as mainstay contender in the privacy coin realm and in the overall crypto space.

As always, thank you all for your continued support on Zero’s path to steady, organic growth and we hope you enjoy the products being delivered that can attest to Zero’s current and future status in this realm.

For anyone interested in investing — please do your own research prior to committing to any project, and we ask you to please not blindly commit to a project because someone else told you to.

Let’s get into the details of what has been happening per section / discipline this week:

Wallets

Web Wallet, Mobile Wallet, and Arizen Wallet:

Welcome Screen — Android Mobile Wallet

TX Screen — Android Mobile Wallet

Send TX Screen — Android Mobile Wallet

Colour Scheme of the Web Wallet / Testing of Web Wallet

The Android beta testing has been going extremely well, with 25 people assisting us with the testing of the app. There were a couple of tweaks to the interface in terms of colour scheme and also some minor UI tweaks.

We are in the process of submitting the Android app now through the Google Play Store to make it nice and official, so please feel free to leave some reviews if you like it, or if you do have issues, please do let us know first so we can action prior to leaving a negative review.

The IOS version is being compiled at the moment, as Cryptoforge managed to emulate the app onto a Mac.

We will let you know when the beta testing opens for this version of the app, and we look forward to letting you test it out and help us identify any issues at all.
Reinforcement learning, from 0 to something in 60 days
By: Cédric Bellet
Tags: Machine Learning, ML, Reinforcement Learning, TensorFlow

In this series, I will attempt to learn something about reinforcement learning in a limited period of time, after work hours, with the intent to have a somewhat performant system built by the end of that period. A system that plays Atari games maybe, or a trading system — we will see.

There is no intended audience for this series, though if you wish to follow this, you should know that I know some fundamental of machine learnings but am no expert. I will try to learn as much as possible, with 50% planning, 50% improvisation as I will run into yet unknown unknowns. If you are a pro, you might find this boring and inaccurate, if you know nothing about maths and stats, I cannot guarantee you will like this either.

Below is my work plan, which will also be the summary of my findings, when I produce the associated articles. I will come back to this work plan and update it as we go. Today is Feb 28, 2018, and here is what I think we will explore, until end of April 2018:
Super short TLDR: Metrics, tracing, and logging in one picture by Peter Bourgon
By: Pavel Trukhanov
Tags: Tldr, Logging, Software Development, Metrics, DevOps

Brief summaries of some long, tech related articles. To get the essence in 1 minute.

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Japan’s National Police Agency to Devise New Software Program to Monitor Crypto Transactions
By: Bernard Obiechina
Tags: Cryptocurrency, Crypto, Japan, Bitcoin, Blockchain

Following illegal activities in the use of cryptocurrencies, the authorities of Japan’s National Police Agency (NPA), has planned to devise new software that can monitor cryptocurrency transactions record in the country, according to NHK on 30th August. However, this motive is prompted to combat the rate of cryptocurrency illegal activities.

Although this project promises a safety use of cryptocurrency transactions, the NPA is expecting to budget at least 35 million yen by 2019, according to Cointelegraph. The NHK reported that the functions of the software include extracting transaction data and monitor transactions which can be used to show the activities of the crypto exchange operators.

Several illicit activities regarding cryptocurrency have been prevailing. Following the criminal activities last month, the commissioner of Japan’s Financial Services Agency (FSA), stated earlier this week that the cryptocurrency industry should “grow under appropriate regulation.” The FSA also made it clear that its objective is to develop the crypto industry in finding a balance between consumer protection and technological innovation.

As much as innovation is encouraged in today’s world, it is essential that security measures are necessarily taken to protect the beneficiaries of the 21st century of technology.

Let us know what you think about Japan’s FSA move to monitor illegal activities that might be occurring in the use of crypto exchange operators in the comment section below.
Late Bloomer
By: Lee-Anne Hancock
Tags: One Line, Poetry, Late Bloomer, Life

It has taken some time

I know.

It seems I take longer than

A lot of others.

But I love where I am now.

With you.

Thanks for waiting.

Your Turn

Theme: Bloom

Inspired by Cie Turvey’s poem and prompt, “Bloom”. Thanks also to our hosts, Kathy Jacobs and Harper Thorpe, and the rest of the talented Chalkboard team!
Episode 7: Fingerprints
By: Collin Müller
Tags: Distributed Ledgers, Cryptography, Bitcoin, Blockchain

Episode 7: Fingerprints

Comparing lists and detecting errors

Whenever our friends at The Blockchain Bar suspect a mistake, they have to compare all entries on the last page with all guests individually. That’s very cumbersome.

Bob is annoyed: “It takes too long to compare every item on the page. There must be a better way.”

Alice has an idea: “Let’s calculate ‘fingerprints’ of our data. Everyone adds up the number of letters in each name on their list. If the sums are identical, the data is probably also identical. So we only have to compare line by line, if there is a mismatch of sums.”

Blockchains do something very similar: They calculate fingerprints of transaction blocks. These fingerprints are called hash values. This makes it easy to compare blocks and identify mistakes or unwanted changes.

But what to do if there are different fingerprints? How to agree on one version? Find out in the next episode…

Or maybe you first want to learn some more about hashing on TheBlockchainBar.com.