NeuroAnswers

Java compound assignment operators (+=, -=, *=, /=) implicitly cast the promoted result back to the left-hand type, so i += j compiles without an explicit cast.

Understand the difference between px, dp (dip), and sp units in Android UI development. Learn when to use android dp for layouts, android sp for text, and px for pixels, with conversion formulas and best practices.

Learn how to undo the most recent local commits in Git using git reset (--soft, --mixed, --hard) or git revert. Step-by-step fixes for wrong files, recovery with reflog, and when to avoid rewriting history. No push needed.