07 January, 2023

How to make money by cryptocurrency - 2023?

How to make money by cryptocurrency?

There are many methods to profit from the cryptocurrency market, but it's crucial to keep in mind that these investments come with a high level of risk due to the market's extreme volatility. Here are some options to think about:


Buy and hold: 

Purchasing a coin that you think will gain value over time and holding onto it for an extended length of time is one strategy to profit from cryptocurrencies. This approach commonly referred to as "HODL," calls for persistence and a lengthy investment horizon.


Trading:

 Actively trading coins on exchanges is another approach to earning money using cryptocurrencies. This can be a riskier tactic because it entails purchasing and selling coins in an effort to benefit from price swings. Trading calls for a solid risk management strategy and a solid comprehension of technical analysis.

ByBit's Traiding


Mining:

Specific hardware can be used to mine some coins, including Bitcoin. You take part in the process of transaction verification and blockchain addition when you mine a currency. A little portion of the coin the miner is mining is given to them as compensation. However, mining can be expensive and expensive equipment and electricity are needed.

crypto Mining rig


Gaining interest

A few cryptocurrency exchanges, such as ByBit , Kucoin and Binance, let you gain interest in your investments. The interest rates on these platforms are often greater than those of traditional banks, but before using them, you should carefully review and evaluate the terms and conditions.


Always exercise caution while making bitcoin investments, and never risk more than you can afford to lose. Additionally, it is wise to spread out your investments rather than putting all your eggs in one basket.

06 January, 2023

microsoft software engineer interview questions

Microsoft Software Engineer Interview Questions

Microsoft is a leading technology company, and as such, the interview process for a software engineer position at Microsoft is likely to be quite competitive. Here are a few examples of questions that you might be asked during a Microsoft software engineer interview:


How do you approach debugging a problem in your code?

  • Can you describe a time when you had to optimize a slow piece of code? How did you go about doing it?
  • How do you keep your technical skills current?
  • Can you describe a project that you worked on where you had to learn a new technology or programming language?
  • How do you handle working on a team where there are differing opinions on the best way to solve a problem?
  • Can you describe a time when you had to work on a tight deadline? How did you manage your time and priorities?
  • How do you approach testing your code?
  • Can you describe a difficult coding problem that you solved and how you went about solving it?
  • How do you handle working with large codebases?
  • Can you describe a time when you had to refactor a large piece of code? How did you approach the task and what was the outcome?

It's important to be prepared to discuss your technical skills and experience in-depth, as well as your problem-solving abilities and approach to teamwork. You should also be prepared to discuss any projects you've worked on in the past, and how you approached them.

best investing strategy in crypto

Best investing strategy in crypto


 Investing in cryptocurrency can be a high-risk, high-reward endeavor. Here are a few strategies that you might consider when investing in cryptocurrency:

Best investing strategy in crypto




  • Diversification: Don't put all your eggs in one basket. Consider investing in a diverse portfolio of different cryptocurrencies to spread out your risk.


  • Dollar-cost averaging: Rather than investing a large sum all at once, try investing a fixed amount at regular intervals (e.g. monthly). This can help to average out the price at which you buy in, potentially reducing the impact of short-term price fluctuations.


  • Long-term holding: Some investors believe in "HODLing" - holding onto their cryptocurrency for the long-term, in the belief that it will increase in value over time. This can be a risky strategy, but it can also potentially lead to significant returns if the value of the cryptocurrency increases.


  • Research and due diligence: Before investing in any cryptocurrency, be sure to do your own research and due diligence. Look into the technology behind the cryptocurrency, the team behind it, and the potential use cases. This can help you make an informed decision about whether it's a good investment for you.


It's important to keep in mind that investing in cryptocurrency carries inherent risks, and you should never invest more than you can afford to lose. It's also a good idea to consult with a financial advisor or professional before making any investment decisions.

What are software development best practices?

Ensuring quality and efficiency in every line of code. #bestpractices #softwareengineering


There are many best practices that can be followed in software development in order to produce high-quality software that is maintainable, reliable, and easy to understand. Here are a few examples:


Write clean, readable, and well-documented code: Use clear and descriptive names for variables and functions, and include comments in your code to explain how it works.


Use version control: Version control systems like Git allow you to track changes to your code, roll back to previous versions, and collaborate with other developers.


Follow a style guide: A style guide is a set of standards for formatting and organizing code. Adhering to a style guide helps to ensure that your code is easy to read and understand.


Write automated tests: Automated tests allow you to verify that your code is working correctly and catch bugs early on in the development process.


Use design patterns: Design patterns are tried-and-true solutions to common software design problems. Using design patterns can help you write more flexible and maintainable code.


Refactor your code regularly: As your codebase grows and evolves, it's important to periodically refactor your code to remove duplication, improve the structure, and make it easier to understand.


Follow agile development methodologies: Agile development methodologies, such as Scrum, emphasize iterative development, collaboration, and flexibility. Using an agile approach can help you deliver high-quality software faster.

Improve Image Quality with C#

How to increase the resolution of an image in C#?

 Improving the resolution of an image, also known as upscaling or resampling, can be challenging as it involves adding new pixels to the image, which can lead to a loss of quality if not done carefully. 

Here is a simple C# program that uses the System.Drawing.Graphics class to upscale an image:


using System;
using System.IO;
using System.Drawing;

namespace ImageResizer
{
    class Program
    {
        static void Main(string[] args)
        {
            string filePath = "C:/path/to/image.jpg";
            int newWidth = 1200;
            int newHeight = 900;

            // Load the image from file
            Image originalImage = Image.FromFile(filePath);

            // Create a new bitmap with the new size
            Bitmap resizedImage = new Bitmap(newWidth, newHeight);

            // Set the interpolation mode to high quality
            resizedImage.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
            Graphics g = Graphics.FromImage(resizedImage);
            g.InterpolationMode = InterpolationMode.HighQualityBicubic;

            // Draw the original image onto the bitmap with the new size
            g.DrawImage(originalImage, 0, 0, newWidth, newHeight);

            // Save the resized image to a new file
            resizedImage.Save("C:/path/to/resized_image.jpg");
        }
    }
}


This program loads an image from a file, creates a new bitmap with the specified width and height, and sets the interpolation mode to high quality. The original image is then drawn onto the bitmap with the new size using the high-quality interpolation mode. Finally, the resized image is saved to a new file.


Using a high-quality interpolation mode, such as InterpolationMode.HighQualityBicubic, can help to reduce the loss of quality when upscaling an image. However, it's important to remember that upscaling an image will always involve some loss of quality, and the resulting image may not be as clear or detailed as the original.

How to compress image size without losing quality in C#?

Reduce Image size C# 


Here is a simple C# program that can be used to minimize the size of an image:

using System;
using System.IO;
using System.Drawing;

namespace ImageResizer
{
    class Program
    {
        static void Main(string[] args)
        {
            string filePath = "C:/path/to/myimage.jpg";
            int newWidth = 640;
            int newHeight = 480;

            // Load the image from file
            Image originalImage = Image.FromFile(filePath);

            // Calculate the new size of the image
            Size newSize = GetNewSize(originalImage.Width, originalImage.Height, newWidth, newHeight);

            // Create a new bitmap with the new size
            Bitmap resizedImage = new Bitmap(newSize.Width, newSize.Height);

            // Draw the original image onto the bitmap with the new size
            using (Graphics g = Graphics.FromImage(resizedImage))
            {
                g.DrawImage(originalImage, 0, 0, newSize.Width, newSize.Height);
            }

            // Save the resized image to a new file
            resizedImage.Save("C:/path/to/resized_image.jpg");
        }

        static Size GetNewSize(int originalWidth, int originalHeight, int newWidth, int newHeight)
        {
            int finalWidth;
            int finalHeight;

            // Calculate the new width and height based on the aspect ratio
            if (originalWidth > originalHeight)
            {
                finalWidth = newWidth;
                finalHeight = (int)(originalHeight * ((float)newWidth / (float)originalWidth));
            }
            else
            {
                finalWidth = (int)(originalWidth * ((float)newHeight / (float)originalHeight));
                finalHeight = newHeight;
            }

            return new Size(finalWidth, finalHeight);
        }
    }
}

 This program loads an image from a file, calculates a new size for the image based on the specified width and height, creates a new bitmap with the new size, and draws the original image onto the bitmap. The resized image is then saved to a new file.


The GetNewSize function is used to calculate the new size of the image based on the aspect ratio of the original image so that the resulting image is not distorted.

16 October, 2022

What is Polkadot(DOT)? and Amazing facts of dot coin?

 


Scaling Issue with Bitcoin/BTC and Ethereum/ETH

As more people use both blockchains over time, scalability issues in the Ethereum and Bitcoin core networks arise. While Visa and Mastercard's traditional payment systems can process 24,000 transactions per second, ETH networks can only process 30 transactions per second. Both networks' transaction fees rise as block demand exceeds their capacity.

BitCoin($BTC) median transaction size is between 3.3 and 7 transactions per second

So here is Polkadot that somehow solves the limitation of this blockchain.

What is Polkadot(DOT)?

Polkadot is a protocol that links incompatible networks (Bitcoin and Ethereum, for example) blockchains, enabling the transfer of wealth and data. It is also intended to be quick and scalable. The DOT token is used for governance and staking.

As the ecosystem of specialized blockchains known as parachains expands, Polkadot unifies and secures them. The foundation of a truly interoperable decentralized web is provided by Polkadot's apps and services, which can securely communicate across chains.


Polkadot(DOT)


Polkadot has the following characteristics:

  • True interoperability
  • Economic & transactional scalability: Due to its capacity to secure many blockchains with a single group of validators, Polkadot offers unprecedented economic scalability. In order to achieve transactional scalability, Polkadot distributes transactions across several parallel blockchains.
  • Easy blockchain innovation: Create a custom blockchain in minutes using the Substrate framework
  • High energy efficiency: Polkadot consumes a small fraction of the energy used by conventional blockchains thanks to its next-generation nominated proof-of-stake (NPoS) model
  • Security for everyone
  • User-driven governance: Polkadot has a sophisticated governance system where all stakeholders have a voice


Consensus


What is the use of $DOT Token?

 DOT is native to the Polkadot platform and its Non-ERC20 Token.
  • It has a circulating supply of 1.2 Billion DOT coins 
  • Total supply of 1.24 Billion. 
  • 1,000 to 1, 500 transactions per second (TPS)

Governance

Owners of Polkadot tokens have all authority over the protocol. The Relay Chain participants (DOT holders) will be granted all powers, including controlling extraordinary events like protocol upgrades and corrections, which on other platforms are only available to miners.

Staking

Game theory incentivizes token holders to behave in honest ways. Good actions are rewarded by this mechanism whilst bad action will lose their stake in the network. This ensures the network stays secure.

Bonding

New parachains are added by bonding tokens. Outdated or non-useful parachains are removed by removing bonded tokens. This is a form of proof of stake.

Polkadot Burning Mechanism

If the Treasury ends a spending period without spending all of its funds, it suffers a burn of a percentage of its funds - thereby causing deflationary pressure. This encourages the spending of the funds in the Treasury through Polkadot's governance system. This percentage is currently at 1% on Polkadot

If you are looking to buy or sell Polkadot


Social Media Community

website:  https://polkadot.network

Wiki:  https://wiki.polkadot.network/docs/learn-DOT

Twitter has more than 1.3M Followers

Twitter has more than 1.3M Followers

Polkadot GitHub  &  Code Repository: 

here you can see the development work  and progress 

https://github.com/paritytech/polkadot


How it Works

The nominating backend will routinely change its nominations at every era. The backend does this by short-listing candidates by validity and then sorts validators by their weighted score in descending order.

Validators with a higher weighted score are selected for any possible slots. As validators are nominated and actively validate, their weighted scores decrease allowing other validators to be selected in subsequent rounds of assessment.

If a validator is active during a single nomination period (the time after a new nomination and before the next one) and does not break any of the requirements, it will have its rank increased by 1. Validators with higher ranks have performed well within the program for a longer period of time.

The backend nominates as many validators as it reasonably can in such a manner to allow each nominee an opportunity to be elected into the active set.

Read more here for details https://wiki.polkadot.network/docs/thousand-validators#how-it-works

What are parachains?

Layer-1 blockchains of the next generation, known as parachains, go beyond the constraints of traditional networks. Parachains are specialized and interconnected networks of separate platforms, communities, and economies that enhance how we connect online.


Drawbacks of Polkadot

A major drawback to Polkadot is the lack of a future roadmap, currently ending at the release of parachains and further auctions, which have already been undergoing. Lacking a future roadmap can cause the project to stagnate and make progress move very slowly.

Weak Governance

DOT holders, the ones supposed to be voting for changes and upgrades in the Polkadot ecosystem are simply not voting enough! The lack of proper engagement could stagnate progress in the ecosystem.

The Founders of Polkadot:

Founded by the Co-Founder of Ethereum, Dr Gavin Wood in 2016, who coined the term Web 3.0 with other founders, including Robert Habermier and Peter Czaban, who both have expert resumes in the Web 3.0 and blockchain development space.

Price History Today  16/Oct/2022, it's 88.8% down, it has enormous potential and is under the buy zone.

Price History Today  16/Oct/2022


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