{"version":"1.0","blog_title":"xuwei-k's blog","description":"I wish the `transformers` library had a RWT (ReaderT + StateT) monad transformer. WriterT is an anti-pattern.2014-04-09 12:17:20 via Twitter for Android @GabrielG439 why is it an anti-pattern?2014-04-09 12:22:13 via Echofon to @GabrielG439 @etorreborre It always leaks space (even if you don't use it\u2026","published":"2014-04-10 12:56:27","author_url":"https://blog.hatena.ne.jp/xuwei/","type":"rich","author_name":"xuwei","provider_url":"https://hatena.blog","url":"https://xuwei-k.hatenablog.com/entry/20140410/1397102187","width":"100%","blog_url":"https://xuwei-k.hatenablog.com/","provider_name":"Hatena Blog","title":"WriterT\u306f\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3","categories":["haskell","scalaz"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fxuwei-k.hatenablog.com%2Fentry%2F20140410%2F1397102187\" title=\"WriterT\u306f\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3 - xuwei-k&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","image_url":null}