I often receive messages like these, where someone asks for help transferring funds and provides the wallet’s seed phrase or password. It might seem tempting, but it’s too good to be true. Don’t fall for it—these funds cannot actually be transferred out. They are simply trying to trick you into transferring funds (like TRX) to their wallet under the guise of helping to unlock the balance. Once you send your funds, you’ll never get them back. Remember, anyone offering “free” access to a wallet with funds is likely running a scam. Always be vigilant and protect your assets! multi-signature autho ..read more

Free $25 Credit from X.AI Earlier this year, Elon Musk’s X.AI company open-sourced the Grok large language model and provided $25 in free credit to use it. You can register for an account on the official website x.ai and apply for an API key. The examples to invoke the Grok are given as tutorials. curl https://api.x.ai/v1/chat/completions -H "Content-Type: application/json" -H "Authorization: Bearer xai-......" -d '{ "messages": , "model": "grok-beta", "stream": false, "temperature": 0 }' Continue Reading » The post ChatGPT writes a Python Script to Interact with Grok LLM from x.ai (Free $25 C ..read more

I solve problems on LeetCode every day. LeetCode has both a Chinese site and an international site, and I submit code to both sites. By checking in daily, I earn points, which can be redeemed for various rewards like T-shirts, hoodies, water bottles, and even a one-month membership fee. I started using LeetCode in August 2018 to prepare for job applications (Amazon Interview), and since then, I’ve been renewing my membership every year. It costs $159 annually, which averages $13.25 per month. I consider this the best investment in myself. Having a LeetCode membership motivates me to keep solvi ..read more

In the past few years, I’ve been actively blogging on Steemit in addition to maintaining a few WordPress blogs. I prefer blogging on Steemit because of several unique advantages: Content Stored on Blockchain On Steemit, all posts and comments are stored immutably on the blockchain. This means the content is not only persistent but also resilient to loss or censorship. Unlike traditional platforms where content could be deleted, either intentionally or due to server failures, the decentralized nature of the blockchain ensures that my writings remain accessible indefinitely. Effortless Image Upl ..read more

Teaching Kids Programming: Videos on Data Structures and Algorithms Convex and Concave Quadrilateral A quadrilateral is a polygon with four sides and four vertices. The distinction between concave and convex quadrilaterals lies in the arrangement of their angles and vertices: Convex Quadrilateral Definition: A quadrilateral is convex if all its interior angles are less than 180 degree, and no line segment between two vertices lies outside the shape. A-------B / \ D-----------C Key Properties: All vertices point outward. The diagonals lie entirely inside the quadrilateral. If you pick any two p ..read more

What is Impermanent Loss? Impermanent Loss (IL) is a unique risk in the field of decentralized finance (DeFi). It primarily occurs when liquidity providers (LPs) supply assets to automated market maker (AMM) platforms such as Uniswap or SushiSwap. Impermanent loss (IL) occurs when the relative price of assets in a liquidity pool changes compared to when they were deposited. It represents a loss compared to simply holding the assets directly. What Causes Impermanent Loss? Impermanent loss arises due to the relative price change of assets within a liquidity pool. When LPs deposit two assets into ..read more

The last good response for Ionomy Crypto Exchange appears to be in June 2024. I have some BLURT tokens on the Ionomy exchange, which I haven’t checked for a while. Recently, I wanted to log in because the bull market has arrived, and BLURT has surged significantly. However, the website is completely inaccessible. The Ionomy exchange is no longer accessible. I asked around and found out it went out of business (ran away) a few months ago (early 2024). I just found out, and the worst part is, there were no notifications or warnings. Someone said, “Exchanges love to run Continue Reading » The pos ..read more

The P-site of the crypto world is Poloniex, which was acquired by Justin Sun a few years ago. It is an Crypto exchange. I used Poloniex long time ago, and my impression of it wasn’t very good back then. However, my opinion of it has improved now because P-site provides free API endpoints (Public Endpoints) to query token prices. Compared to others, it is relatively easy to use. For instance, the free interface provided by coinmarketcap (acquired by Binance) has many restrictions. The following interface of official documentation) has a generous rate limit of 200 requests per second. https://ap ..read more

In System Design Interviews, the availability percentages are the fundamental that a software engineer should be familiar with. In the world of system reliability, availability percentages like 99.9% or 99.99% are critical benchmarks. But what do these numbers really mean, and how do they translate into actual downtime? In this post, we’ll walk through how to calculate the downtime associated with different availability levels, using examples to illustrate what you can expect from 99.9%, 99.99%, and other availability targets. What Do Availability Percentages Mean? Availability percentages ind ..read more

In C++, std::future and std::async are part of the C++11 standard’s concurrency library. They allow you to run tasks asynchronously and obtain results later, making them useful for writing non-blocking code and parallelizing computations. Here’s a breakdown of how they work and how they’re typically used: C++ std::async std::async is a high-level function that allows you to launch a task (a callable, such as a function or lambda) asynchronously. You specify a function to run, and std::async returns a std::future that represents the result of the function. You can later retrieve this result, ei ..read more