core: Inherit possible string functionality

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This moves as much allocation as possible from teh std::str module into
core::str. This includes essentially all non-allocating functionality, mostly
iterators and slicing and such.

This primarily splits the Str trait into only having the as_slice() method,
adding a new StrAllocating trait to std::str which contains the relevant new
allocation methods. This is a breaking change if any of the methods of "trait
Str" were overriden. The old functionality can be restored by implementing both
the Str and StrAllocating traits.

[breaking-change]

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This commit is contained in:

Alex Crichton

2014-04-30 23:06:36 -07:00

parent 544d909401

commit 9bae6ec828

18 changed files with 1986 additions and 1952 deletions

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2023

src/libstd/str.rs

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