Make `fold` standalone. - #72139

Merged

bors merged 3 commits into

rust-lang:masterfrom

nnethercote:standalone-fold

May 20, 2020

Commits on May 17, 2020

Make `fold` standalone.
nnethercote
committed
4b7c3d8
Tweak `partition`, `unzip`, `try_find`.
nnethercote
committed
c2abf8f

Commits on May 18, 2020

Add some more `rfold` implementations.
nnethercote
committed
959bd48