純じゅん粋すい関かん数すう

noun

pure function

In computing, a function that always returns the same output for the same input and has no side effects.

• 純じゅん粋すい関かん数すうは副ふく作さ用ようを持もたないため、テストが容よう易いです。

  Pure functions are easy to test because they have no side effects.