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Software Engineering vocabulary · Code Review and Code Quality

Dead code

Meaning in software engineering, with examples

nounCommon term

In software engineering, dead code means: Code that is never run or whose result is never used, for example an old function nobody calls. It only makes the codebase harder to read.

In Turkish: ölü kod, kullanılmayan kod

How it is used

Reviewers ask authors to remove dead code instead of commenting it out, since version control keeps the history anyway. Many IDEs and linters can detect unused functions and variables.

Example sentences

  1. Half of this file is dead code from the old checkout, so let's delete it.

  2. Don't comment out dead code; Git already remembers it.

Common collocations

  • remove dead code
  • clean up dead code
  • dead code elimination
  • unused code
  • refactorTo improve the structure of existing code, making it cleaner or easier to change, without changing what it does for the user.
  • technical debtThe future cost of shortcuts taken in code today: quick solutions that save time now but make later changes slower and riskier.
  • linterA tool that scans code without running it and warns about style problems, suspicious patterns and simple mistakes, such as unused variables.
  • code smellA sign in code that suggests a deeper design problem, such as a very long function, duplicated logic or too many parameters, even if the code works.

More terms: Code Review and Code Quality

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