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Theorem option.choice_eq_none

Modification history

2021-05-18 04:50
src/data/option/basic.lean
feat(logic/is_empty): Add is_empty typeclass (#7606) …
Modified option.choice_eq_noneView on Github →
2021-04-09 08:28
src/data/option/basic.lean
feat(data/option/basic): option valued choice operator (#7101)
Added option.choice_eq_noneView on Github →