Clifford Beshers wrote:
Sara Kenedy wrote:
Hi all,
I want to write a function to separate a string into a list of strings
separated by commas.
Example:
separate :: String -> [String]
separate "Haskell, Haskell, and Haskell" = ["Haskell", "Haskell", "and
Haskell"]
If anyone has some ideas, please share with me. Thanks.
Here is a solution using the Posix regex module.
Prelude Text.Regex> splitRegex (mkRegex "[ \t]*,[ \t]*") "Haskell,
Haskell, and Haskell"
["Haskell","Haskell","and Haskell"]
This form should work regardless of locale, but appears to be broken,
although I expect this is either my fault or that of the underlying
Posix library:
Prelude Text.Regex> splitRegex (mkRegex "[:space:]*,[:space:]*")
"Haskell, Haskell, and Haskell"
["Haskell"," Haskell"," and Haskell"]
Going by man grep, those [:foo:] classes are only special inside a
character class, otherwise [:space:]* = [aceps:]*.
Prelude Text.Regex> splitRegex (mkRegex "[[:space:]]*,[[:space:]]*")
"Haskell, Haskell, and Haskell"
["Haskell","Haskell","and Haskell"]
Brandon
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