Type Checker

What is Type Checker?

A program that verifies the data types of variables and functions in code to prevent logic errors and ensure consistency before the code is executed.

In other languages

한국어타입 검사기

프로그램 내 변수나 함수의 데이터 형식이 올바르게 사용되었는지 확인하여 오류를 미연에 방지하는 도구다.

日本語型チェッカー

プログラム内の変数や関数が扱うデータの種類（型）が、定義通り正しく使われているかを検証するツール。

Related Terms

• Static type systemProgramming language feature that checks variable and expression types before a program runs, usually during compilation
• Type hintingA way to annotate code with the expected data types of variables and functions to improve readability and catch errors earlier.
• VerifierA program or procedure that checks whether an output or sequence of actions satisfies specified conditions.
• Null checkA programming validation step that verifies if a variable or reference points to a valid object
• TypestateType-system technique where types encode an object's state so invalid operations can be rejected at compile time
• LintingAutomated process of analyzing source code to flag programming errors, bugs, and stylistic inconsistencies
• Maker/checkerAn internal control pattern where one process performs an action and a second, independent process verifies its correctness
• Schema validationProcess of checking data against a defined structure, including required fields, types, and constraints
• Lean certificateMachine-checkable formal proof written in the Lean theorem prover, used to verify mathematical arguments with software
• LinterA static code analysis tool used to flag programming errors, bugs, stylistic errors, and suspicious constructs within source code.
• Deterministic checkVerification process that produces the same output for a given input by following fixed rules, excluding non-deterministic elements like model-based inference.
• Static scannerAnalysis tool that inspects files or code without executing the program being checked