RustのVecの添字アクセスのOption版ってないんだろうか
@rinsuki https://doc.rust-lang.org/1.59.0/std/vec/struct.Vec.html#impl-Index%3CI%3E
Index trait の index() でいけるはず
@rinsuki https://mastodon.cardina1.red/@lo48576/107972550539581939忘れてください
@lo48576 thx!!
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