[Haskell-cafe] why no replace function in our regular expression libs ?
Albert Y. C. Lai
trebla at vex.net
Sat Jan 26 00:53:40 CET 2013
On 13-01-25 02:06 PM, Simon Michael wrote:
> People have put a lot of work into regular expression libraries on
> haskell. Yet it seems very few of them provide a replace/substitute
> function - just regex-compat and regepr as far as I know. Why is that ?
> Secondly, as of today what do y'all do when you need that functionality
I can only speak for myself, why I do not miss regex substitution too much.
Sometimes, regex substitution is exactly the solution, and I use it. But
the whole job is easily done in a shell script, or even in an editor. So
I don't use regex substitution in Haskell in this case.
Sometimes, the substitution job is: transform this
<!DOCTYPE html etc etc>
In this job, if a regex solution exists, I don't want to know. I just
use HXT or XSLT.
Sometimes, regex substitution plus Haskell is exactly the solution. Then
I use regex-compat. It works. One solution is enough. I don't need a
hundred choices for regex, or a hundred choices for Int.
More information about the Haskell-Cafe