The regex-compat docs say "
Returns:
https://hackage.haskell.org/packages/archive/base/4.5.0.0/doc/html/Data-Mayb...
strs
if the match succeeded (and
strs
is the list of subexpression matches), or
https://hackage.haskell.org/packages/archive/base/4.5.0.0/doc/html/Data-Mayb...
otherwise.
”
.
Adam Bergmark
On Tue 05 Apr 2016 at 22:16 Jeffrey Brown
<
mailto:Jeffrey Brown
wrote:
Esteemed Haskellers, It is working for me, but I am puzzled by the matchRegex function: > import Text.Regex > :i matchRegex matchRegex :: Regex -> String -> Maybe [String] -- Defined in ‘Text.Regex’ Searches that fail return Nothing: > matchRegex (mkRegex "z") "abracadabra" Nothing which makes sense. But why do searches that succeed return an empty list of Strings? > matchRegex (mkRegex "a") "abracadabra" Just [] > -- Jeffrey Benjamin Brown _______________________________________________ Haskell-Cafe mailing list mailto:Haskell-Cafe@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe