rust-lang/rust — pull request #18770 by pczarn (2014-11-08 12:31:55+00:00)
Title: Remove implicit shrinking from hash_map.

Part of enforcing capacity-related conventions, for #18424, the collections reform.

Implements `fn shrink_to_fit` for HashMap.
The `reserve` method now takes as an argument the *extra* space to reserve.