以不同的方式显示Haskell列表？

本文介绍了以不同的方式显示Haskell列表？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

[one，two， 3]

显示为

需要它为文件完成
   
感谢  
解决方案
你可以做插入来自 Data.List  
  showList :: Show a => [a]  - >字符串 showList =插入，。 map show   
  map show 将每个元素（ intercalate，）插入逗号和空格之间的部分并将它们粘合在一起。
使用引号（和任何内部引号正确转义） b $ b
hey i was wandering if it was possible to show a list:
["one", "two", "three"]
to be shown as
"one", "two", "three"
need it done for a file

thanks
 解决方案 
You can do this with intercalate from Data.List
 showList :: Show a => [a] -> String
 showList = intercalate ", " . map show
The map show converts each element to it's string representation with quotes (and any internal quotes properly escaped), while intercalate ", " inserts commas and spaces between the pieces and glues them together.