The systematic examination of source code by developers other than the original author to identify bugs, improve code quality, and share knowledge. Code reviews are typically done before new code is merged into the main codebase.
Compound of 'code' and 'review' from French 'revoir' meaning 'to see again.' The practice emerged in the 1970s at IBM and became widespread with the rise of collaborative development tools in the 2000s.
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