Def Sum.isLeft

Modification history

2023-09-12 23:50
Mathlib/Data/Sum/Basic.lean
chore: bump Std for #251 (#7126) …
Deleted Sum.isLeftView on Github →
2022-10-25 00:37
Mathlib/Data/Sum/Basic.lean
feat: port Data.Sum.Basic (#497) …
Added Sum.isLeftView on Github →