Sean McArthur 44440e5c18 core: split into fmt::Show and fmt::String ... fmt::Show is for debugging, and can and should be implemented for all public types. This trait is used with `{:?}` syntax. There still exists #[derive(Show)]. fmt::String is for types that faithfully be represented as a String. Because of this, there is no way to derive fmt::String, all implementations must be purposeful. It is used by the default format syntax, `{}`. This will break most instances of `{}`, since that now requires the type to impl fmt::String. In most cases, replacing `{}` with `{:?}` is the correct fix. Types that were being printed specifically for users should receive a fmt::String implementation to fix this. Part of #20013 [breaking-change]		2015-01-06 14:49:42 -08:00
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mod.rs
num.rs	core: split into fmt::Show and fmt::String	2015-01-06 14:49:42 -08:00