Author: admin
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Algorithms 101: `>>` vs `>>>`
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In Python, understanding the difference between the >> operator and the non-existent >>> operator is crucial for correct bitwise operations and shifts. This section will explain how these operators work, clarify the distinction, and illustrate their use cases. 在 Python 中，理解 >> 操作符和不存在的 >>> 操作符之间的区别对于正确执行位操作和移位至关重要。本节将解释这些操作符的工作原理，澄清它们的区别，并举例说明它们的使用场景。 1. What is the >>…
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Algorithms 101: |` vs `||` and `&` vs `&&`
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| vs || and & vs && Understanding the difference between bitwise operators (|, &) and logical operators (||, &&) is essential for writing efficient and bug-free code in Python. This section will break down how these operators work, their use cases, and when to use each type. 理解位操作符 (|,…
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Algorithms 101: Practical Applications of Bitwise Operations
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位操作的实际应用 Introduction 介绍 Bitwise operations play a critical role in programming, especially when dealing with tasks that require high performance and precise control over data at the binary level. These operations work directly on the binary representations of data, making them extremely efficient and powerful tools in various programming scenarios.…
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Security 101: Comparison of Session, JWT, Token, SSO, and OAuth 2.0
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会话、JWT、令牌、SSO 和 OAuth 2.0 的比较 Understanding the differences between various authentication mechanisms is critical for selecting the right approach for your application. Below is a comparison of Session, JWT, Token, SSO, and OAuth 2.0 across multiple dimensions. 了解各种身份验证机制之间的差异对于为您的应用程序选择合适的方法至关重要。以下是会话、JWT、令牌、SSO 和 OAuth 2.0 在多个维度上的比较。 Comparison Table 比较表格 Aspect Session-Based Authentication JWT (JSON…
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Python 101: The differences between `zip` and `zip_longest` in Python
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Let’s explore the differences between zip and zip_longest in Python, with a focus on their behavior and use cases. zip Function The zip function is a built-in Python function that aggregates elements from multiple iterables (like lists, tuples, strings, etc.) into tuples. It pairs the elements from each iterable based…
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LeetCode: 238 Product of Array Except Self
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Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements of nums except nums[i]. The product of any prefix or suffix of nums is guaranteed to fit in a 32-bit integer. You must write an algorithm that runs in…
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System Design 101: Race Conditions
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竞态条件 What is a Race Condition? 什么是竞态条件？ Race Condition occurs when two or more threads or processes attempt to modify shared data at the same time, leading to unpredictable results. 竞态条件 发生在两个或多个线程或进程试图同时修改共享数据时，导致不可预测的结果。 Why are Race Conditions Important? 为什么竞态条件很重要？ Unpredictable Behavior: They can cause software to behave unpredictably, leading to bugs…
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System Design 101: Concurrency vs Parallelism in System Design
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并发与并行在系统设计中的区别 Understanding the distinction between concurrency and parallelism is crucial in system design. As Rob Pike, one of the creators of GoLang, stated: 理解并发和并行之间的区别在系统设计中至关重要。正如 GoLang 的创始人之一 Rob Pike 所说： "Concurrency is about dealing with lots of things at once. Parallelism is about doing lots of things at once." “并发是处理很多事情。并行是同时做很多事情。” What…
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System Design 101: 10 Essential Components of a Production Web Application
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生产环境 Web 应用程序的 10 个基本组成部分 1. CI/CD Pipelines 1. CI/CD 管道 What: CI/CD pipelines automate the process of deploying code to server instances. 什么: CI/CD 管道自动化代码部署到服务器实例的过程。 Why: They ensure code changes are tested and deployed seamlessly, improving deployment efficiency and reliability. 为什么: 它们确保代码更改得到测试并无缝部署，提高部署效率和可靠性。 Who: Typically handled by DevOps engineers or…