Theorem Option.exists_ne_none

Modification history

2025-05-02 23:00
Mathlib/Data/Option/Basic.lean
chore: bump toolchain to v4.20.0-rc2 (#24561)
Deleted Option.exists_ne_noneView on Github →
2024-06-09 14:51
Mathlib/Data/Option/Basic.lean
chore(*): drop some long-deprecated theorems (#13619)
Added Option.exists_ne_noneView on Github →