问题描述
我想知道是否可以将字符串转换为字符列表?
I was wondering if I can convert a string to a list of characters?
"jt5x=!" -> ["j","t","5","x","=","!"]
基本上是吗?
example :: String -> [Char]
推荐答案
(将评论收集为答案)
由于在haskell中，String 是一个字符列表，即[Char]，只需返回给定的输入即可.
Because in haskell, a String is a list of characters, i.e. [Char], just returning the input as given will do.
example = id
做您想要的.请注意，id被定义为
does what you want. Note that id is defined as
id x = x
您的示例"jt5x=!" -> ["j","t","5","x","=","!"]与描述不符:双引号""括起String而不是单个Char行为.对于字符，请使用单引号'.您可以输入
Your example "jt5x=!" -> ["j","t","5","x","=","!"] does not match the description: Double quotes "" enclose Strings not single Characters. For characters use single quotes '. You can type
"jt5x=!" == ['j','t','5','x','=','!']
进入GHCi，并看到它返回True.键入map (:[]) "jt5x=!"即可实际看到["j","t","5","x","=","!"].
into GHCi and see it returns True. Type map (:[]) "jt5x=!" to actually see ["j","t","5","x","=","!"].
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