sandeepkv93

Advanced HashMap Methods in Java - Use Cases & Examples

1. getOrDefault(K key, V defaultValue)

Use Cases:

• Counting occurrences efficiently.
• Handling missing keys.
• Providing default responses.

Example: Word Frequency Counter

sandeepkv93

✅ Use Case: Apply Only Top Commit from a Branch on Top of main

🎯 Goal

From a feature branch, apply only the latest commit on top of the latest main branch — and discard all earlier commits in that branch.

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📌 Assumptions

sandeepkv93

✨ Move Top Commit to Stash and Rebase on Latest main

This guide shows how to take the top commit from your current branch, temporarily stash it, update your branch to match the latest main, and then re-apply the stashed changes.

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🔧 Use Case

You’ve made one local commit on a feature branch but later realize you want that commit to apply on top of the latest main instead. Rather than rebasing or cherry-picking, you want to:

sandeepkv93

Complete Guide: SSH from Android Termux to Mac using NordVPN Mesh

This guide covers setting up SSH access from Android Termux to macOS, including NordVPN Mesh configuration for remote access.

Table of Contents

• Prerequisites
• Mac Setup
• NordVPN Mesh Setup
• Termux Setup
• SSH Key Configuration

sandeepkv93

Complete Guide: Remove File from All Git Commits

This guide shows how to permanently delete a file from all commits in a Git repository, including its entire history.

Prerequisites

• Git installed
• Python 3.x installed (for git-filter-repo)
• Administrator/owner access to the repository

sandeepkv93

Graphite CLI for Stacked Pull Requests - Complete Guide

Table of Contents

• Introduction
• Git Configuration for Graphite
• Complex Stack Examples
• Managing Partially Merged Stacks
• Conflict Resolution Strategies
• Advanced Workflows
• Automation and Scripts

sandeepkv93

Python3 LeetCode Complete Wiki

Table of Contents

1. Basic Data Structures
2. Collections Module
3. Heaps (Priority Queues)
4. Trees
5. Graphs
6. Strings
7. Common Patterns

sandeepkv93

NordVPN Command Line (CLI) – Complete Reference Guide

Table of Contents

1. Overview
2. Installation
3. Login & Account Management
4. Basic Connection Commands
5. Countries, Cities & Groups (Server Discovery)
6. Server Groups (P2P, Double VPN, etc.)

sandeepkv93

Complete Guide to Bazel and Gazelle for Go Projects

A comprehensive guide to building Go projects with Bazel and Gazelle, covering modern Bzlmod configuration, BUILD file generation, and practical examples.

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Table of Contents

1. Introduction
2. Prerequisites and Installation

sandeepkv93

Setting Up OpenCode with Ollama (Local-Only)

Full guide for Pop!_OS with 32 GB RAM + Core Ultra 9. Everything runs locally, zero cloud calls.

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Strategy: Two Paths for This Hardware

Path 1: CPU-local via Ollama (start here)