Theorem Option.ne_none_iff_isSome

Modification history

2022-09-15 13:39

Mathlib/Data/Option/Basic.lean

chore: bump to 2022-09-15 (#414)

Deleted Option.ne_none_iff_isSome View on Github →

2021-12-18 19:21

Mathlib/Data/Option/Basic.lean

feat: porting Data.List.Defs, Init.Data.List.Basic (#137) …

Added Option.ne_none_iff_isSome View on Github →