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React 19 is the biggest release since React 16 hooks. Actions replace useEffect form submissions, useOptimistic enables instant UI feedback, and React Compiler eliminates manual memoization. Complete guide with working code examples.
Git power users know commands that make time travel possible. Learn interactive rebase to sculpt perfect commit histories, git bisect to find the exact commit that introduced a bug in 12 steps, cherry-pick for surgical code transplants, and worktrees for parallel feature development.
A complete, step-by-step masterclass on Git version control and GitHub collaboration: working tree vs staging area, branching workflows, merge vs rebase, conflict resolution, cherry-pick, stashing, pull requests, and CI/CD pipelines.