yuki

<p>よく驚かれるが、Rust の標準ライブラリにはたとえば正規表現などがない。</p>
<p>これには理由がある。</p>
<p>下記 Reddit 。</p>
<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__cf5ac618dbec2" src="https://embed.zenn.studio/card#zenn-embedded__cf5ac618dbec2" data-content="https%3A%2F%2Fwww.reddit.com%2Fr%2Frust%2Fcomments%2F6ddp3e%2Fwhy_does_rusts_standard_library_feel_so_small%2F" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://www.reddit.com/r/rust/comments/6ddp3e/why_does_rusts_standard_library_feel_so_small/" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://www.reddit.com/r/rust/comments/6ddp3e/why_does_rusts_standard_library_feel_so_small/</a></p>


<p>ちなみにフォーラムでもときどき話題にのぼる。</p>
<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__0d3e82655559d" src="https://embed.zenn.studio/card#zenn-embedded__0d3e82655559d" data-content="https%3A%2F%2Fusers.rust-lang.org%2Ft%2Frust-should-have-a-big-standard-library-and-heres-why%2F37449" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://users.rust-lang.org/t/rust-should-have-a-big-standard-library-and-heres-why/37449" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://users.rust-lang.org/t/rust-should-have-a-big-standard-library-and-heres-why/37449</a></p>


<p>さて、なぜ Rust では標準ライブラリが小さく保たれる必要があるかと言うと、大きい理由は Rust は後方互換性を重視するからで、標準ライブラリが大きいとそれを保ちにくくなるから。</p>
