davidon

Front End Knowledge Base

A collection of dev notes and Q&A on web development topics.

Contents

File	Topic
Git-conventional-commits.md	Conventional Commits — feat, fix, and friends
JS-worklets-vs-main-thread.md	Worklets vs Main Thread
Tool-copilot-edit-vs-plan-vs-agent.md	GitHub Copilot Modes — Edit vs Plan vs Agent
Web-chrome-third-party-cookies.md	Chrome & Third-Party Cookies (2025)
Web-storage-comparison.md	sessionStorage vs localStorage vs Cache Storage vs Shared Storage

davidon

Null Object Pattern in PHP

Overview

The Null Object pattern replaces null return values with a special "do-nothing" object that shares the same interface as the real object. This eliminates the need for null checks at every call site and prevents "Call to a member function on null" fatal errors.

When to use it

davidon

Frequently Used Git Worktree Commands

Basic Operations

git worktree add <path> <branch>         # Create worktree for a branch that already exists in the repo
git worktree add -b <new-branch> <path>  # Create worktree with new branch
git worktree list                        # List all worktrees
git worktree remove <path>               # Remove a worktree