Shotaro Yamada f7821f55c8 Improve Arc<str> creation ...

While using `Into` could avoid an allocation in `String` -> `Box<str>`,
converting `Box<str>` into `Arc<str>` deallocates and re-allocates anyway.

2020-01-10 00:56:41 +09:00

..

smol_str

Improve Arc<str> creation

2020-01-10 00:56:41 +09:00