teleren/devto huggingface dataset:
Live CD Olmadan Ubuntu/Linux Mint INITRAMFS Hatasının Çözümü
Tags: linux, ubuntu, initramfs
Published: 2023-10-12 13:59:05

## Initramfs Hatası Nasıl Çözülür?

Merhaba herkese,

Initramfs hatası, hepimizin başına gelen ve karşımıza çıktığında oldukça can sıkan bir durum :).

Bu hatayı çözmek için forumlara bakarsanız, birçok kişinin bu sorunu live CD ile çözmeniz gerektiğini söylediğini görmüşsünüzdür. Ancak şimdi size, live CD kullanmadan, doğrudan hata ekranı üzerinden nasıl çözebileceğinizi anlatacağım.

Öncelikle, initramfs ekranındayken aşağıdaki adımları izleyelim:

1. İlk adımda, `exit` komutunu yazın ve hata ekranının hangi diskte olduğunu size göstermesini bekleyin. Örneğin, benim durumumda `/dev/sdb3` olarak gösterdi. Sizde ise bu `/dev/sda1` olabilir.

2. Hangi diskte hata olduğunu öğrendikten sonra, `fsck` komutunu kullanarak düzeltme işlemine başlayabilirsiniz. Örnek olarak:
   
   ```shell
   fsck /dev/sdb3 -y
   ```
3. İşlem tamamlandığında, sistem yeniden başlatmak için `reboot` veya initramfs ekranından çıkmak için `exit` komutunu kullanabilirsiniz.

Bu adımları takip ederek, initramfs hatasını çözebilirsiniz. Umarım bu rehber size yardımcı olur. İyi şanslar!
My 15 Gas Optimization techniques for a standard Solidity smart contract
Published: 2023-10-12 13:38:55

**_Gas optimization is crucial to reduce costs and enhance the efficiency of smart contracts. So, how can you achieve this? Here are thirteen tips to help you optimize gas usage in Solidity:_**

1. Use appropriate data types:
Choosing the right data types can significantly reduce gas consumption.

2. Opt for mappings over arrays:
This allows for faster indexing, and reduce gas consumption.

3. Choose fixed-sized arrays over dynamic ones:
Fixed-sized arrays are more efficient.

4. Minimize on-chain data:
Store data off-chain when appropriate.

5. Enable Solidity compiler optimization:
This can notably cut down gas usage

6. Precompute data off-chain whenever possible: 
Complex calculations done off-chain can reduce gas costs.

7. Utilize constants and immutable variables: 
These can lower gas costs associated with storage operations.

8. Short-circuit conditionals: 
This can save gas by not evaluating the rest of the expression if the first part is true or false.

9. Pack variables: 
Storing multiple variables in a single storage slot can save gas.

10. Use well-tested libraries: 
Avoiding code duplication and using well optimised libraries can reduce gas costs.

11. Utilize the external visibility modifier: 
It's often more gas-efficient than public.

12. Utilize indexed events: 
This can save gas by storing indexed parameters in a separate data structure.

13. Use custom error handling:
This reduces gas usage than using the require technique.

14. Avoid using many iterative loops in your contract:
This avoids overlooping that keeps on using gas. You should actually avoid it up to no-use of them because they are too dangerous when it comes to gas utilization.

15. Thoroughly test contracts and get them audited:
This is crucial for gas optimization and security. By all means, try to increase contract coverage as much as possible.
Stellar Cyber with John Peterson, Chief Product Officer
Published: 2023-10-12 13:34:34

[https://omny.fm/shows/the-silicon-valley-insider-show/stellar-cyber-podcast](https://omny.fm/shows/the-silicon-valley-insider-show/stellar-cyber-podcast)

On this episode of Silicon Valley Insider host Keith Koo has special guest John Peterson, Chief Product Officer of [Stellar Cyber](https://stellarcyber.ai/) (stellarcyber.ai) an innovative cyber security company using [artificial intelligence](https://stellarcyber.ai/platform-ai-engine/) (AI) and machine learning (ML) to empower SMBs (small and medium sized businesses) to gain access to the same types of advanced [security tools](https://stellarcyber.ai/platform-xdr-kill-chain/) that Fortune 500 companies do.

John discusses how the founders of Stellar Cyber (formerly named Aella Della) got their start and how their security platform provides a unique approach via their customers’ MSSPs ([managed security service providers](https://stellarcyber.ai/mssps/mdr-as-a-service/)) and their SOCs ([security operation centers](https://stellarcyber.ai/platform-sensors/)). John discusses the struggle of any company to managed all of the [cyber security tools](https://stellarcyber.ai/platform-xdr-kill-chain/) they use due to resource and budget constraints.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/0l480abfbmd1klftt7sd.jpg)
My Pledge in Hacktoberfest 2023
Published: 2023-10-12 13:26:02

#hacktoberfest23
My Hacktoberfest Journey: Embracing the Spirit of Open Source:

Hello, fellow tech enthusiasts! As a Senior Software Engineer (Frontend) My Journey with open contributions. I'm excited to join the DEV community and share my journey through Hacktoberfest this year. As someone who is relatively new to the world of open source and coding, I'm eager to participate in this incredible event and be part of the global open source community.
Bundling Security Services to Improve Pricing and Close Ratios
Published: 2023-10-12 13:20:16

Today’s businesses succeed by selling a handful of bundled items to a large number of customers. Think about restaurants, where the trend has been away from a’ la carte menus to limited menus, because it’s easier, more efficient, and requires less skill to produce a few entrée/side dish combinations than to try to fulfill each diner’s specific requests. In fact, many menus these days say “no substitutions” or warn of extra charges for substitutions because these throw a monkey wrench into the works of high-volume mass production. The same is true in the car business: in the old days, buyers ordering cars would choose from a laundry list of options and order the car they wanted, and the factory would build specific cars for specific customers. Now, the most successful car companies sell cars with pre-defined packages because it’s more efficient and profitable to mass-produce those packages than to customize every car.

[MSPs and MSSPs](https://stellarcyber.ai/platform/capabilities-ng-siem/) can leverage this trend by bundling their offerings and selling those bundles for a set monthly fee. Rather than forcing the customer to determine its needs and then order a suite of products or services, the service provider can offer bundled services that satisfy most of the people most of the time. To sell such bundles, Service providers should focus not on the technology they contain or the specific [IT services](https://stellarcyber.ai/platform/capabilities-ndr/) they support, but on how they impact the overall business.

For example, a security bundle might incorporate Office365, IDS and [firewall services](https://stellarcyber.ai/platform/capabilities-automate-response/). Customers will care more about how this security bundle protects the most critical business applications – email and Internet access. It’s easier to sell on business benefits because it shows a more direct impact on the customer’s bottom line. And a first-line-of-defense [security](https://stellarcyber.ai/platform/what-is-open-xdr/) offering is what many small and medium businesses need.

As an MSP adding security services, or an [MSSP](https://stellarcyber.ai/platform-xdr-kill-chain/) looking to target a new market segment, bundling services has a positive effect on your close ratios, pricing, and your ability to scale your business. As with a restaurant or car maker, selling bundles is more operationally efficient and makes it easier to on-board and serve new customers at a faster rate without necessarily scaling staff. In addition, these service bundles can strongly differentiate your company by putting you in the real-world solutions business rather than the technology business. Managed providers who offer bundled [security services](https://stellarcyber.ai/platform-xdr-kill-chain/) will find a ready audience and a path to higher profits and stronger growth.
Security as a Service – Where do I start?
Published: 2023-10-12 13:16:07

Security as a Service – Where do I start?A discussion with David Barton, CISO at [Stellar Cyber](https://stellarcyber.ai/)

Every [managed service provider](https://stellarcyber.ai/mssps/mdr-as-a-service/) seems to be focusing on security these days. For an MSP adding security services, or an MSSP looking to target a new market segment, here are the common questions I frequently get when I meet with service providers.

## Is it too late to launch security offerings?

No. In particular, SMBs and mid-market companies are having a hard time hiring and keeping qualified security professionals on staff. And over the last 10 years there has been a boom in companies investing in security tools, but they have only increased their alert volume and false positives. Customers are overwhelmed with alert fatigue and are spending time writing scripts rather than being strategic. Many mid-market and small-medium businesses are looking to leverage managed security services as a means to hire the expertise they can’t afford to scale on their own. You can address their pain with [security solutions](https://stellarcyber.ai/platform-ai-engine/) they now buy as a service.

## How should I decide on a target segment?
The answer depends in part on your service region. You can either think vertically and become tied to a specific industry such as Healthcare (offering HIPPA protection and consulting, for example), or Financial Services (with a strong portfolio of governance and compliance packages). Alternatively, you can think of the company scale. For larger providers, you can have a deeper set of offerings and the potential to be the expert in [security services](https://stellarcyber.ai/platform/platform-threat-intelligence/) in your region. For SMB customers, think in terms of simple ‘good enough’ offerings that solve 80 percent of these businesses’ pain 80 percent of the time.

## What can I do to ensure high margins?
Focus is key to ensure you are the best in your region. Customers will be attracted to you because you sell solutions that map to their concerns and will learn to trust you since they see you know more than they do, are responsive, and reinforce their decision to outsource key security functions to you. Additionally, as an MSP adding [security services](https://stellarcyber.ai/platform/capabilities-ng-siem/) or an MSSP looking to target a new market segment, leveraging automation technology such as machine learning and artificial intelligence will help your security operations team scale cost-effectively.

Although you might feel there is a lot of hype around ML and AI, the idea of ‘autonomous infrastructure’ is a long-term trend that will be a strategic advantage for your business. Investing now in platforms that help your team learn will also help you offer high-margin services that differentiate – such as [advanced threat detection](https://stellarcyber.ai/platform/platform-threat-intelligence/), response and eventually [threat hunting](https://stellarcyber.ai/platform/automated-threat-hunting/) services.

David Barton
CISO at Stellar Cyber
Java Design Patterns in Easy Way Series
Tags: java, designpatterns, designsystem, design
Published: 2023-10-12 12:52:19

Design patterns are common solutions to recurring problems that developers face when designing software. They are like tried-and-tested templates that help you solve specific design problems in a structured and efficient way. Think of design patterns as blueprints for building software applications.

## Design Patterns in Software Development

Imagine you are building a house. When you build a house, you follow certain design principles. For example, you make sure there are doors for entering and exiting rooms, windows for letting in light, and a roof to protect from rain. These principles are like design patterns in software development.

In software, we often encounter similar problems when designing applications. Design patterns are solutions to these common problems. They are like standard approaches that experienced developers have found to work well. Instead of reinventing the wheel every time we face a problem, we can use these patterns.

## Why Use Design Patterns

1. **Proven Solutions**: Design patterns are proven solutions to common problems. They’ve been used successfully in many projects.
2. **Maintainability**: They make your code more organized and easier to understand, which helps with maintenance and collaboration.
3. **Reusability**: You can reuse design patterns in different parts of your software or even in different projects.
4. **Common Language**: They provide a common language for developers to communicate and share ideas. When you say “I’m using the Factory pattern,” other developers immediately understand what you mean.

## Types of Design Patterns

There are three main categories of design patterns:

1. **Creational Patterns**
These deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. Examples include Singleton, Factory, and Builder patterns.

2. **Structural Patterns**
These focus on how classes and objects are composed to form larger structures. Examples include Adapter, Decorator, and Composite patterns.

3. **Behavioral Patterns**
These are concerned with communication between objects, how they interact, and how they handle responsibilities. Examples include Observer, Strategy, and Command patterns.

## When to Use Design Patterns

> **_You don’t have to use design patterns in every project. Use them when_**:
> - You encounter a common problem that a pattern can solve.
> - You want to make your code more organised and maintainable.
> - You want to follow best practices and industry standards.
> - You want to communicate your design to other developers effectively.

In summary, design patterns are like best practices for building software. They provide solutions to common problems, make your code better organised, and help you communicate with other developers. They are tools that can help you become a more efficient and effective software developer.
Slack Workflow Builder: Send Messages in 2 Simple Steps
Published: 2023-10-12 12:49:11

## Goal
This guide will cover: 

- how to create a new workflow in Slack using a webhook trigger
- how to trigger that workflow from Appsmith and send a message to a channel

## Prerequisites

- An Appsmith account
- A Slack account, and a workspace you own or have permission to install workflows on

## Overview
Slack has been rolling out some new updates recently, and the UI changes have many users upset and looking for [ways to re-enable the old UI](https://www.reddit.com/r/Slack/comments/16iiphb/hate_the_new_ui/). 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8u71jarh609bv0iidid4.png)

But last week, after the whiplash from the UI changes wore off, I noticed this new Automation tool. It's a workflow builder that allows you to chain together different actions and automate tasks in Slack and other connected platforms, like a basic version of Zapier or n8n. 

Slack already had support for sending a message to a channel using a webhook, but now you can send webhooks to a workflow. This means you can trigger a series of actions, including channel messages, adding a row to Google Sheets, creating a Notion doc, and all kinds of other actions. 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ud68ku4by3cy8ity5r29.png)

1. Create a New Workflow in Slack
First, create a new workflow in Slack, and set it up to send a message to a specific channel. 
{% youtube 70_4jjUwlK4 %}

2. Create the Webhook API in Appsmith
Next, create a new POST API in Appsmith, and sent a test message. 

{% youtube bVqCleew8bs %}
 
**That's it!**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/fn7dt7bk2d8osbg2bdbg.png)

Just 2 simple steps to create the workflow and trigger it from Appsmith. 

## Conclusion
Slack workflows also have integrations with SalesForce, Notion, Google Sheets, and a bunch of other services. With the workflow published and a POST API set up, you can now integrate Slack with Appsmith, and automate your team's business tasks more seamlessly. We'd love to hear how you're using Slack and Appsmith at work! Or if you have ideas for a tutorial, feel free to post below and request.
How Does Kotlin Save the Day for Developers?
Tags: kotlin, android, ios
Published: 2023-10-12 12:43:38

**What is Kotlin?**
Kotlin is like a magic wand that helps developers tell computers what to do. It's a special language that makes coding fun and easy! With Kotlin, we can write instructions for computers, and they'll turn them into amazing apps!
Kotlin applications will run on a variety of platforms, including Linux, Android, Windows,  iOS, macOS, watchOS, and others.

Kotlin is the bridge for both apps and here is how they contribute to the development process

**Code Reusability and Maintenance**
Kotlin is completely reusable for multiple platforms. Developers can write pieces of code that are super versatile and work well in different parts of their apps. Instead of creating new code every time they want to add a cool feature, developers can simply utilize the code they already have."
Kotlin programmers maintain clean and easily comprehensible code, allowing them to detect and address any issues that may arise more easily.

**Faster Development and Prototyping**
In the coding world, the planning and testing process is called development and prototyping. Kotlin speeds up the process of turning your idea into a real toy. It helps developers write code faster and more efficiently. 
They can try out different designs and features in a very simple manner.


**A Happy Developer Community**
Kotlin has many friends who love using it! They share their ideas and help each other, making the coding world a happier place! Kotlin plays a big role in making this community happy and united.

As the need and urge for new apps for daily purposes and the upliftment of any process. The development of apps must cope up with the demands. Using Kotlin could help in such a time-saving process in[ app development](https://www.uplogictech.com/).
Mastering IP Location Services for Developers
Published: 2023-10-12 12:34:40

IP location services are essential for developers. They provide location data for users, enabling personalized experiences and improved security.

**IP Location Basics**
IP location services work by pinpointing the physical location of an internet-connected device using its IP address. This data can be leveraged in various ways to enhance user experiences.

**Real-world Benefits**
Developers can use IP location data to tailor content, improve security, and create location-aware features. For instance, delivering localized content and enhancing user engagement.

**Integration in a Snap**
Integrating IP location services can be done in a few simple steps. It involves obtaining an API key, making requests to iplocation.io, and incorporating the data into your app.

**Conclusion**
Mastering IP location services is a valuable skill for developers. It opens doors to personalization, improved security, and location-aware features. [iplocation.io](https://iplocation.io) is your trusted companion in this journey.
Favourite piece of Scala code
Tags: scala, stringtransformation, operationaltransformation
Published: 2023-10-12 12:33:09

My favorite piece of Scala code is simple. It's not related to functional programming, typelevel / zio / akka libraries or concurrency.

It simply applies a set of operations on a string, and with the same set of operations, you can **reconstruct** the original string from the mutated one.

There are three operations: Keep, Insert, and Delete. To represent them as a sequence of operations in JSON, we can assign each operation a type:
- Keep could be a number, indicating how many characters to keep
- Insert can be represented by a string
- Delete can be represented by an array, containing a string element

For example:
```javascript
mutationLoop([3], "foo")          = "foo"
mutationLoop(["foo"], "bar")      = "foobar"
mutationLoop([["foo"]], "foobar") = "bar"

// Using them all together
mutationLoop(["foo", 2, ["r"], "z"], "bar") = "foobaz"
```

When we need to store different versions of a string, we can save space by storing the deltas instead of the full strings. This works well for large strings, but it may not be as useful for smaller strings.

---

#### What does the implementation look like?

We need to traverse all operations and apply them one by one:
- For keep, we need to skip a certain number of characters
- For insert, we need to inject a substring into a string
- For delete, we need to remove a substring from a string

Using the _circe_ library, the implementation is as follows:

{% embed https://gist.github.com/manufacturist/0ad37d19aac7de72e1f5b7cf3dea1ca0 %}

**NB1.** The delete operation does not do anything with the string value itself, besides counting the number of characters that need to be deleted. However, it is used when reverting an operation, to recreate the original string
 
**NB2.** If we didn't need to be able to revert, instead of an array with a string, we could have specified a negative integer, telling us how many characters we need to remove

To revert the changes, we simply keep the order of the operations, replacing insert operations with delete operations and vice versa:

{% embed https://gist.github.com/manufacturist/7845d2e2bc90579cac88fefa72d10c78 %}

And putting it to good use:

{% embed https://gist.github.com/manufacturist/992df026ff9fbbb576a0b4c9e0522743 %}

---

#### Why is this my favourite code snippet?

It reminds me of simpler times and humble beginnings, when we didn't take basic building blocks for granted and were mindful of every line of code written, constantly trying to give our best with the little experience we had.

Chef Slowik in the movie [The Menu](https://www.imdb.com/title/tt9764362/) experiences something similar at the end of it, when cooking a cheeseburger. He is reminded of the simple things that ignited his passion for cooking.

Similarly, this snippet of code reminds me of why I enjoy programming.