Hoge: { a, b } みたく省略記法が使えるんですがどのバージョンからstable入りしたのか思い出せない…
1.17か https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1170-2017-04-27 … https://github.com/rust-lang/rust/pull/39761 …
10:48 AM - 4 Jun 2017
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