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🚀 Ultimate Tmux Cheat Sheet 🔌 Session Management # Starting & Ending tmux → Start new session tmux new -s name → Start new named session Ctrl+b d → Detach from session exit → Kill session # Reconnecting tmux ls → List all sessions tmux a → Attach to last session tmux a -t name → Attach to named session 🪟 Window Wizardry # Pane Splitting Ctrl+b " → Split horizontally ⬆️⬇️ Ctrl+b % → Split vertically ⬅️➡️ # Pane Navigation Ctrl+b + arrows → Move between panes Ctrl+b o → Toggle between panes Ctrl+b x → Close current pane Ctrl+b z → Zoom/unzoom pane 📏 Resize Like a Pro # Manual Resizing Ctrl+b Ctrl+arrows → Resize current pane Ctrl+b Alt+arrows → Fine-tune resize # Quick Layouts Ctrl+b Alt+1 → Even horizontal split Ctrl+b Alt+2 → Even vertical split Ctrl+b Alt+5 → Tiled layout 🎯 Pro Tips Always remember Ctrl+b is your prefix key Use tmux ls when lost Name your sessions for easy management Detach (don’t exit) to keep sessions running 🚨 Emergency Commands tmux kill-server → Nuclear option (kills everything) tmux kill-session -t name → Kill specific session Remember: Practice makes perfect! Start with basic commands and gradually incorporate more advanced ones into your workflow. 🎮

The Bill Pugh Singleton Pattern: An In-Depth Guide What is a Singleton? A singleton is a design pattern used to ensure that a class has only one instance and provides a global point of access to that instance. This pattern is widely used in scenarios where it’s essential to have a single point of control, such as logging, configuration settings, or database connections. Why is Singleton Needed? Singletons are used to: ...

When working on a Python project, it’s essential to manage dependencies efficiently. One of the best practices is to use a virtual environment. This guide will walk you through creating a virtual environment and generating a requirements.txt file to manage your project’s dependencies. Step 1: Create a Virtual Environment A virtual environment is an isolated environment that allows you to manage dependencies for your project without affecting the global Python installation. To create a virtual environment, follow these steps: ...

Introduction In modern programming, memory management plays a crucial role in optimizing performance. One often overlooked concept in this area is memory padding—a technique used by compilers to ensure data alignment in memory, enhancing the CPU’s ability to access data efficiently. Let’s dive into what memory padding is, why it’s needed, and how it impacts the performance of your applications. What is Memory Padding? Memory padding is the process of adding extra bytes between data fields in memory to ensure they are properly aligned. This padding helps the CPU access data more efficiently, as modern processors are designed to access memory in specific chunks (e.g., 4 or 8 bytes) instead of individual bytes. If data is misaligned—meaning it doesn’t start at a memory address divisible by the processor’s word size—this can result in slower access and additional CPU cycles to retrieve the data. ...

In MongoDB, the memory size of data types like Number and String varies depending on the specific type and content. Here’s a simplified breakdown: Number Data Types: Double (64-bit floating-point): 8 bytes. 32-bit Integer (int): 4 bytes. 64-bit Integer (long): 8 bytes. Decimal128 (high-precision): 16 bytes. String Data Type: Memory Size: Depends on the length of the string in UTF-8 encoding. Formula: (Number of UTF-8 characters) + 1 byte for a null terminator + 4 bytes for overhead. For example, the string “hello” would require 10 bytes in total. ...

As a developer working with Java on macOS, you might encounter cryptic errors related to Java configuration. One common culprit is an incorrectly set or missing JAVA_HOME environment variable. In this blog post, we’ll explore how to diagnose and fix these issues, ensuring smooth sailing for your Java-based projects. The Problem: “Could not get a real path from Java Home” Picture this: you’re excited to start a new project using Maven Daemon (mvnd), but when you try to run it, you’re greeted with an error message like this: ...

Ever wondered about the difference between markup and margin? These two terms often confuse business owners and students alike. Let’s break them down in simple terms! Markup: Adding to Your Cost Markup is the amount you add to your cost to set your selling price. It’s always based on your cost. Formula: Markup % = (Selling Price - Cost) / Cost x 100 Example: You buy a t-shirt for $10 and sell it for $15. Markup = ($15 - $10) / $10 x 100 = 50% ...

While it’s tempting to use POST for everything in web development, the existence of multiple HTTP methods serves crucial purposes. Here’s why we need methods like GET alongside POST: Semantic Clarity: Different methods convey different intents. GET retrieves data, POST submits it. Safety and Idempotency: GET requests are safe and idempotent, unlike POST requests which may change server state. Caching: GET requests are easily cacheable, boosting performance for frequently accessed resources. User-Friendly URLs: GET requests can be bookmarked and shared easily, as parameters are in the URL. Security Considerations: POST sends data in the request body, offering slightly more security for sensitive information. Data Size Handling: GET has URL length limitations, while POST can handle larger data in the request body. RESTful API Design: Different HTTP methods map neatly to CRUD operations in RESTful architectures. Protocol Compliance: Using appropriate methods adheres to web standards, improving interoperability. While using POST for everything is possible, it sacrifices these benefits and goes against established web conventions. Embracing the full spectrum of HTTP methods leads to cleaner, more intuitive, and standards-compliant web applications and APIs.

Learn how to cherry-pick multiple commits from one branch to another and force update the target branch, resolving conflicts by favoring the changes from the cherry-picked commits. Introduction Cherry-picking in Git allows you to apply specific commits from one branch to another. However, conflicts can arise, making the process tedious. This guide shows you how to automate cherry-picking and force update a branch while resolving conflicts by choosing changes from the cherry-picked commits. ...

Overview This note covers the concepts of upcasting, downcasting, and serialization in Java. It explains what happens to object fields during these processes and includes a practical example. Classes Definition Let’s define two classes, Alpha and Beta, where Beta is a subclass of Alpha. class Alpha { int a1; int a2; int a3; } class Beta extends Alpha { int b4; } Upcasting When you upcast an object of a subclass (Beta) to its superclass (Alpha), you are changing the reference type but not the actual object in memory. ...