The story
From side effect + -free.
Etymology from Wiktionary, CC BY-SA 4.0.
side-effect-free
Today it means: Of a function, operation, or expression, producing no observable changes beyond their primary output or return value. Full definition →
Today it means: Of a function, operation, or expression, producing no observable changes beyond their primary output or return value. Full definition →
From side effect + -free.
Etymology from Wiktionary, CC BY-SA 4.0.