rohki https://blog.hatena.ne.jp/rohki/ ソモサン https://rohki.hatenablog.com/ Programming Rust 短く crap.rs の requires_if/requires_ifs を使おう。 .arg( Arg::with_name("iterator-type") .short("t") .long("iterator-type") .possible_values(&IteratorType::variants()) .requires_ifs(&[ ("AT_SEQUENCE_NUMBER", "sequence-number"), ("AFTER_SEQUENCE_NUMBER", "sequence-number"), ("AT_TIMESTAMP", "timestamp"), ])… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Frohki.hatenablog.com%2Fentry%2F2018%2F05%2F28%2F225714" title="Rust の CLI ツールで引数の値が特定のものであれば別の引数を必須にしたい - ソモサン" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2018-05-28 22:57:14 rich https://rohki.hatenablog.com/entry/2018/05/28/225714 1.0 100%