Twan van Laarhoven wrote:
Twan van Laarhoven wrote:
Hello all,
As Thomas Hartman noted in a recent cafe thread [1], haskell 1.3 included the functions 'subsequences' and 'permutations'. I think these functions are quite useful, and I don't know why they were ever removed. This is a proposal to add these two functions to Data.List. The implementation is taken directly from the Haskell 1.3 report [2].
Trac ticket: #1990 Discussion period ends: January 7th (since there is a holiday comming up)
The discussion period for this proposal is over. Everyone here seems to agree it is a good idea.
The patch attached to the trac ticket contains the best versions discussed in this thread: - Wolfram(kahl@cas.mcmaster.ca)'s version of subsequences - my permutations8c
Can someone with the power to do so apply this patch?
I've milestoned it for inclusion in GHC 6.10. Cheers, Simon