teleren/devto huggingface dataset:
The Top 5 Portable Power Stations You Need for Your Next Outdoor Adventure
Published: 2023-11-30 04:36:36

[![portable power station](https://cdn.shopify.com/s/files/1/0596/3507/3193/files/3_447113f6-7d11-490b-9cc1-e5c5e3b6485b.jpg)](https://vtoman.com/blogs/news/vtoman-flashspeed-1500-black-friday-gift?utm_source=dev_to&utm_medium=rankking)Portable power stations have become a must-have for any outdoor enthusiast. These devices allow you to charge your electronic devices, power your camping lights, and run your portable fridge, all while enjoying the great outdoors. As the world becomes more reliant on technology, the need for a portable power station has exploded. Here are the top 5 portable power stations you need for your next outdoor adventure. 1\. Jackery Explorer 1000 Portable Power Station The Jackery Explorer 1000 Portable Power Station is a perfect choice for those with larger power needs. It boasts a 1000 watt-hour capacity and can power devices up to 1000 watts. It has a variety of outputs, including 3 AC outlets, 2 USB-C ports, and 2 USB-A ports. It also weighs 22 pounds, making it easy to transport. 2\. Goal Zero Yeti 500X Portable Power Station The Goal Zero Yeti 500X Portable Power Station is a mid-range option for those who need a reliable, portable power source. It has a 505 watt-hour capacity and can power small appliances, lights, and charging electronic devices. It also has four USB ports and two AC outlets, along with a car charger port. It is lightweight, weighing only 12.9 pounds. 3\. EcoFlow River 600 Portable Power Station The EcoFlow River 600 Portable Power Station is another mid-range option, with a 576 watt-hour capacity. It has a variety of outputs, including two AC outlets, two USB-C ports, and two USB-A ports. It also has two DC outputs and can power up to eleven devices at once. It is portable, weighing only 11 pounds. 4\. MAXOAK Bluetti AC50S Portable Power Station The MAXOAK Bluetti AC50S Portable Power Station is an excellent option for those who need a powerful and rugged power station. It has a 500 watt-hour capacity and can power up to nine devices simultaneously. It has a variety of outputs, including two AC outlets, one USB-C port, and four USB-A ports. It also has a car charging port and a solar charging input option. 5\. Anker Powerhouse 200 Portable Power Station The Anker Powerhouse 200 Portable Power Station is a budget-friendly option that still packs a punch. It has a 213 watt-hour capacity and can power up to seven devices simultaneously. It has one AC outlet, two USB-A ports, one USB-C port, and a 12V DC outlet. It is also lightweight, weighing only 6 pounds. In conclusion, having a portable power station is essential for any outdoor adventure. From charging electronic devices to powering a portable fridge, a portable power station can make a significant difference in your outdoor experience. These five options are top contenders for any outdoor enthusiast looking to stay charged while off the grid.

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The state of the thread
Published: 2023-11-30 04:35:26

# from OS

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/m6h8i04q6p02ctlrk07d.png)
When an application is to be processed, then it creates a thread.
It is then allocated the required resources(such as a network) and it comes in the READY queue.
When the thread scheduler (like a process scheduler) assign the thread with processor, it comes in RUNNING queue.
When the process needs some other event to be triggered, which is outsides it’s control (like another process to be completed), it transitions from RUNNING to WAITING queue.
When the application has the capability to delay the processing of the thread, it when needed can delay the thread and put it to sleep for a specific amount of time. The thread then transitions from RUNNING to DELAYED queue.
An example of delaying of thread is snoozing of an alarm. After it rings for the first time and is not switched off by the user, it rings again after a specific amount of time. During that time, the thread is put to sleep.

When thread generates an I/O request and cannot move further till it’s done, it transitions from RUNNING to BLOCKED queue.
After the process is completed, the thread transitions from RUNNING to FINISHED.
The difference between the WAITING and BLOCKED transition is that in WAITING the thread waits for the signal from another thread or waits for another process to be completed, meaning the burst time is specific. While, in BLOCKED state, there is no specified time (it depends on the user when to give an input).
https://www.geeksforgeeks.org/thread-states-in-operating-systems/
# from Java
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/hbk3x3lmjq0plbnz0fo6.png)

NEW – a newly created thread that has not yet started the execution
RUNNABLE – either running or ready for execution but it’s waiting for resource allocation
BLOCKED – waiting to acquire a monitor lock to enter or re-enter a synchronized block/method
WAITING – waiting for some other thread to perform a particular action without any time limit
TIMED_WAITING – waiting for some other thread to perform a specific action for a specified period
TERMINATED – has completed its execution
Digital Saga of Gaming and Anime Worlds
Tags: webdev, programming, python
Published: 2023-11-30 04:30:47

"Venturing further into the realm of gaming, Telescope Editor becomes the ultimate hub for gaming enthusiasts and storytellers alike. Unleash the power of words and images to delve into the intricate narratives of popular titles or explore the indie gaming scene bubbling with innovation as [ny apk](https://nyapk.com/carrom-pool-apk/). Dive deep into the world of anime games, where vibrant characters and immersive storylines collide, creating a unique fusion of gaming and storytelling. Share your insights on the ever-expanding anime game universe, from classic franchises to groundbreaking releases. Telescope Editor ensures that the pulsating heart of gaming, coupled with the artistry of anime games, finds a resonant voice in the digital symphony of storytelling."
What is TVM(Time Value of Money)
Published: 2023-11-30 04:08:39

"TVM" in the context of financial analysis most commonly refers to "Time Value of Money." Time Value of Money is a fundamental concept in finance that states that a sum of money has a different value today compared to its value in the future. The idea is based on the principle that a dollar today is worth more than a dollar in the future due to its potential earning capacity.

Here's a more detailed explanation:

### Time Value of Money (TVM):

1. **Present Value (PV):**
   - PV represents the current value of a future sum of money, discounted at a specific rate.
   - It's the idea that a certain amount of money today is worth more than the same amount in the future.

2. **Future Value (FV):**
   - FV represents the value of a present sum of money at a future date, given a specific interest rate.
   - It helps in calculating the potential future worth of an investment or savings.

3. **Interest Rate (i):**
   - The interest rate, also known as the discount rate or rate of return, is a crucial component in TVM calculations.
   - It reflects the opportunity cost of using money today rather than in the future.

4. **Time (n):**
   - Time represents the number of periods involved, such as years, months, or any other unit.
   - It is a key factor in determining the impact of compounding on the future value of money.

### TVM Formulas:

1. **Present Value (PV):**
   - PV = FV/(1 + i)^n
   - This formula calculates the present value of a future sum of money.

2. **Future Value (FV):**
   - FV = PV * (1 + i)^n
   - This formula calculates the future value of a present sum of money.

3. **Interest Rate (i):**
   - i = (FV/PV)^(1/n) - 1
   - This formula calculates the interest rate given the present and future values.

4. **Time (n):**
   - n = (log(FV/PV))/log(1 + i)
   - This formula calculates the number of periods needed to achieve a certain future value.

### Practical Applications:

1. **Investment Valuation:**
   - TVM is used to assess the value of investments and make decisions about whether to invest in certain opportunities.

2. **Loan Amortization:**
   - It is used in calculating loan payments, understanding the impact of interest rates on the total cost of a loan.

3. **Retirement Planning:**
   - TVM helps individuals plan for retirement by determining how much money needs to be saved to achieve a desired future income.

4. **Discounted Cash Flow (DCF) Analysis:**
   - TVM is a core concept in DCF analysis, a method widely used in business valuation.

Understanding TVM is crucial in making informed financial decisions, especially when comparing investment options, analyzing loans, or planning for long-term financial goals. It's important to note that the formulas may vary slightly depending on the compounding frequency (e.g., annually, semi-annually, quarterly).
Main thread and daemon thread
Published: 2023-11-30 04:28:02

As long as there are threads running, the Java process will not end.
For daemon threads, as long as other non-daemon threads have finished running, even if the code of the daemon thread has not finished executing,
It will force the end of setDaemon(true) and set it as a daemon thread.
The garbage collector is a daemon thread
The Acceptor and Poller threads in Tomcat are both daemon threads
join method
Published: 2023-11-30 04:24:55

Wait for the thread to finish running before executing other threads
Applied to thread synchronization.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/m57agogmj1p46uil98j7.png)

join (long time) has a time limit to wait. If the time is up and the execution is not completed, it will end directly.
After the previous execution is completed, wait in advance.
start and run
Published: 2023-11-30 04:23:23

If you use the run method directly, you cannot start a new thread. You must use the start method to start a thread.
The start method cannot be called multiple times. After the thread becomes runnable, it cannot be called again using start.
# sleep and yield
sleep：
1. Calling sleep will cause the current thread to enter the Timed_Waiting state from Running (blocking)
2. Other threads can use the interrupt method to interrupt the sleeping thread, and the sleep method will throw
InterruptedException
3. The thread after sleeping may not be executed immediately
4. It is recommended to use TimeUnit’s sleep instead of Thread’s sleep for better readability.
yield:
1. Calling yield will cause the current thread to enter the Runnable ready state from Running, and then schedule the execution of other threads.
Procedure
2. The specific implementation depends on the task scheduler of the operating system
The task scheduler will not allocate time slices to threads in blocked state (Timed Waiting)
Thread priority
The thread priority will prompt the scheduler to schedule the thread first. It is just a prompt and can be ignored by the scheduler.
When the CPU is relatively busy, threads with higher priority will get more time slices. When the CPU is relatively idle, threads with higher priority will get more time.
Level has almost no effect
setPriority()1-10, the default is 5, the bigger, the higher
sleep application - prevent 100% CPU usage
When the CPU is not used for calculations, do not let while (true) idle and waste the CPU. In this case, you can use yield or
sleep to give CPU usage rights to other programs
You can use wait or condition variables to achieve similar effects.
The difference is that the latter two require locking and corresponding wake-up operations, which are generally suitable for scenarios where synchronization is required.
​
Stack and stack frame
Published: 2023-11-30 04:22:11


Stack memory is for threads. After each thread is started, the virtual machine will allocate a piece of stack memory for it.
Each stack consists of multiple stack frames, corresponding to the memory occupied by each method call.
Each thread can only have one active stack frame, corresponding to the method currently being executed.
Thread Context Switch
Reasons that cause the CPU to no longer execute the current thread and instead execute the code of another thread:
The thread's CPU time is exhausted
Garbage collection
There are higher priority threads that need to run
The thread itself calls methods such as sleep, yield, wait, join, park, synchronized, and lock.
When a Context Switch occurs, the operating system is required to save the state of the current thread and restore the state of another thread.
Status, the corresponding concept in Java is Program Counter (Program Counter Register), its function is
Remember the execution address of the next jvm instruction, which is private to the thread.
The status includes the program counter, information about each stack frame in the virtual machine stack, local variables, operand stack, and return address.
wait
Frequent occurrence of Context Switch will affect performance
4 Pillars Of OOP in Java
Tags: java, oop, programming, object
Published: 2023-11-30 04:21:05

In the modern programming world, there are five types of programming languages. 

1. Procedural programming languages
2. Functional programming languages
3. **Object-oriented programming languages**
4. Scripting languages
5. Logic programming languages

Java, the focus of this post, is an object-oriented programming (OOP) language. Object-oriented programming is a computer programming model that organizes software design around data and objects rather than functions and logic. An object can be defined as a data field that has unique attributes and behavior.

**Four pillars of OOP**
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/t911qj9mssctwz6ru3og.png)
Object-oriented programming uses Four pillars of OOPs to create efficient software systems: encapsulation, abstraction, inheritance, and polymorphism.

_Encapsulation_

At the heart of encapsulation is the bundling of data and methods that operate on that data within a single unit known as a class. A class is a blueprint for objects, defining their properties (attributes or fields) and behaviors (methods). This bundling ensures that the internal workings of an object are hidden from the outside world, promoting data integrity and security.

_Abstraction_

Abstraction involves simplifying complex systems by modeling classes based on essential properties. It allows developers to focus on high-level concerns without getting bogged down in the details. Abstract classes and interfaces in Java are key components of abstraction, providing a blueprint for other classes to implement.

_Inheritance_

Inheritance is a mechanism that allows a new class (subclass or derived class) to inherit attributes and behaviors from an existing class (superclass or base class). This fosters code reuse and establishes a hierarchy among classes, facilitating the creation of more specialized classes without duplicating code.

_Polymorphism_

Polymorphism, meaning "many forms," allows objects of different classes to be treated as objects of a common superclass. This can be method overloading (multiple methods with the same name but different parameters) and method overriding (providing a specific implementation for a method in a subclass).


Java's commitment to the four pillars of OOP — encapsulation, inheritance, polymorphism, and abstraction — empowers developers to write clean, modular, and maintainable code.
Exploring the Future of Innovation: Insights from the No Code NYC Meetup
Tags: nocode, bubble, webflow, squarespace
Published: 2023-11-30 03:36:51

Recently, I had the fantastic opportunity to participate in the No Code NYC meetup, an event dedicated to exploring the transformative power of no-code software development. As a passionate advocate for democratizing tech and fostering innovation, I was thrilled to share my insights on this burgeoning movement in a presentation titled "No Code Software Development: Empowering Creativity Without Boundaries."

The event gathered a diverse group of individuals, including entrepreneurs, tech enthusiasts, business owners, and investors, all intrigued by the idea of building software solutions without the need for traditional programming expertise. The atmosphere buzzed with excitement about how no-code platforms are revolutionizing the way we approach software development.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/35n7uq2tvp6o75zuobyf.jpeg)

During my presentation, I emphasized the democratizing impact of no-code software development. I highlighted how these platforms empower individuals from various backgrounds to transform their ideas into functional applications without the barriers of coding knowledge. Through intuitive interfaces, drag-and-drop functionalities, and visual components, I showcased how easy it is to design, build, and deploy applications, fostering a culture of innovation and inclusivity.

A key point I emphasized was the speed and efficiency that no-code platforms bring to the development process. I showcased examples of how businesses can rapidly prototype and test ideas, enabling quick iterations based on real-time feedback. This agile approach allows for swift adaptation to market demands, encouraging experimentation and ultimately leading to more refined and user-centric products.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/qb0hab48yj19emv6qvge.jpg)

As I concluded my presentation, I highlighted the immense potential of no-code software development. Its evolution continues to break new ground, expanding its capabilities to encompass more complex applications, from AI integration to data analytics. The future holds a world where the lines between traditional coding and no-code development become increasingly blurred, opening doors to endless possibilities.

The meetup wasn't just about presentations; it was a vibrant exchange of ideas and experiences. Engaging in discussions with fellow attendees, I witnessed the enthusiasm and curiosity surrounding the future of no-code development. Many shared their success stories, from launching startups to enhancing existing businesses, all made possible through these innovative platforms.
Tác giả Mạnh Dũng
Published: 2023-11-30 03:32:24

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What I've learn from 3 years freelancing
Tags: programming, freelance, python, typescript
Published: 2023-11-30 02:31:12

Context...
- I don't have any degree, neither in cs nor another field
- I start learning programming for fun, than for wasting my time during covid-19 pandemic era becouse you know nothing to do back then
- In 2021, I tried to find small freelancing projects
- In November 2023, I've completed more than 150 projects
- I've done it using one or more of these programming language: javascript, typescript, python, c, and dart
- I've done it targeting one or more of these platform: web, desktop, mobile, cloud
- I've done it in these one or more caregories: web dev, mobile dev, data science, machine learning, scripting
- And yeah 90% of it is just a small projects
- A little story of my first project in bahasa indonesia: [Proyek Freelance Pertama Saya](https://maukode.com/proyek-freelance-pertama-saya/)

Here's what I've learn:
- It's not the code that couse the bug, it's you
- AI is the next big thing, and it already happening
- Strong programming foundations will bring you far
- I learn more by doing projects than watching tutorials and reading articles or even attending courses
- Dont get me wrong, I'm still watching, reading and attending courses, my point is, find real projects to apply what you've learn
Can anyone recommend a modern CSS course?
Tags: css, questions
Published: 2023-11-30 02:21:39

I would like to learn some modern CSS (not really looking for things like SASS, Tailwind, etc) via a course (or courses) online to get re-acquainted with all the cool things CSS can do in 2023!

* Yes, a re-cap of the basics would be nice, but I think I am already here
* Focus on things like CSS Grid, flexbox, `@media`, and CSS variables would be great!

Looking for really great paid/un-paid courses!

Video-based > Text-based, but I'll take either!

Thanks!