regex-pcre：我需要什么进口？

Question

我安装我的第一个Haskell包阴谋：

$ cabal install regex-pcre 

可以用正则表达式PCRE所以我可以找出我应该导入有人张贴一个简单的例子？

Answer 1

好吧，我想通了。你需要的模块是Text.Regex.PCRE。对于POSIX正则表达式，它是Text.Regex.Posix。这里有一个例子：

ghci>:m +Text.Regex.PCRE 
ghci>"heeeee" =~ "hee|he*" :: [[String]] 
Loading package array-0.4.0.0 ... linking ... done. 
Loading package bytestring-0.9.2.1 ... linking ... done. 
Loading package deepseq-1.3.0.0 ... linking ... done. 
Loading package containers-0.4.2.1 ... linking ... done. 
Loading package transformers-0.3.0.0 ... linking ... done. 
Loading package mtl-2.1.2 ... linking ... done. 
Loading package regex-base-0.93.2 ... linking ... done. 
Loading package regex-pcre-0.94.4 ... linking ... done. 
[["hee"]] 

ghci>:m -Text.Regex.PCRE 
ghci>:m +Text.Regex.Posix 
ghci>"heeeee" =~ "hee|he*" :: [[String]] 
Loading package regex-posix-0.95.2 ... linking ... done. 
[["heeeee"]]