KDOC 647: select は複数の case が同時に実行できる状態だとランダムに選ぶ

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  • 2026-10-05 貴島
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  • 2026-10-05 貴島

select は複数の case が同時に実行できる状態だとランダムに選ぶ。

If one or more of the communications can proceed, a single one that can proceed is chosen via a uniform pseudo-random selection. Otherwise, if there is a default case, that case is chosen. If there is no default case, the “select” statement blocks until at least one of the communications can proceed. The Go Programming Language Specification - The Go Programming Language

なし。