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Theorem roption.ne_none_iff

Modification history

2021-08-09 11:59
src/data/pfun.lean
chore(data/pfun): rename `roption` to `part`, split `data.part` off `data.pfun` (#8544)
Deleted roption.ne_none_iffView on Github →
2019-08-15 20:26
src/data/pfun.lean
feat(*): lemmas needed for two projects (#1294) …
Added roption.ne_none_iffView on Github →