这是Text.Parsec的惯用用法吗? [英] Is this idiomatic use of Text.Parsec?

问题描述

我对Text.Parsec的使用有点生锈.如果我只想返回匹配的字符串，这是惯用的吗?

My use of Text.Parsec is a little rusty. If I just want to return the matched string is this idiomatic?

category :: Stream s m Char => ParsecT s u m [Char]                        
category = concat <$> (many1 $ (:) <$> char '/' <*> (many1 $ noneOf "/\n"))

我觉得可能已经存在liftM concat . many1或(:) <$> p1 <*> p2的现有运算符，但我不确定.

I feel like there might be an existing operator for liftM concat . many1 or (:) <$> p1 <*> p2 that I'm ignoring, but I'm not sure.

推荐答案

我认为很好.明智的命名会使它更漂亮:

That's fine, I think. A little judicious naming would make it prettier:

category = concat <$> many1 segment
  where
    segment = (:) <$> char '/' <*> many1 (noneOf "/\n")

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