sirocco https://blog.hatena.ne.jp/sirocco/ sirocco の書いてもすぐに忘れるメモ https://sirocco.hatenadiary.org/ Haskell Text.Regex.Posix の (=~) 関数を使った置換 import Text.Regex.Posix replace str old new | match == "" = str | otherwise = headStr ++ new ++ replace tailStr old new where (headStr,match,tailStr) = str =~ old ::(String,String,String) import Text.Regex.Posix replace str old new = let (a,b,c) = str =~ old ::(Strin… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20100402%2F1270167983" title="Haskellの正規表現によるマッチ判定・文字列の置換・文字列の分割 - sirocco の書いてもすぐに忘れるメモ" 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 2010-04-02 09:26:23 rich https://sirocco.hatenadiary.org/entry/20100402/1270167983 1.0 100%