Rollup of 11 pull requests#84490

Merged

bors merged 27 commits intorust-lang:masterfrom

JohnTitor:rollup-wrdj4ko

Apr 23, 2021

Commits on Jan 8, 2021

Improve `Iterator::by_ref` example
camelid
committed

Commits on Feb 8, 2021

Better line grouping
camelid
committed

Commits on Feb 14, 2021

Add basic usage example
camelid
committed

Commits on Mar 20, 2021

Remove redundant second example
camelid
committed

Commits on Apr 19, 2021

rustdoc: Convert sub-variant toggle to HTML
Swatinem
committed

Commits on Apr 20, 2021

:arrow_up: rust-analyzer
lnicola
committed

Commits on Apr 22, 2021

Commits on Apr 23, 2021