Why is there no splitBy in the list module?

[Udo Stenzel]

Christian Maeder wrote:
> Malcolm Wallace schrieb:
> > I think the general objection to the "With" suffix is that it is
> > non-standard naming.  All the Haskell'98 libraries use "By" for this
> > kind of meaning.
> 
> Looking at Data.List there is not a single function with suffix "By"
> that takes a predicate argument (filter, dropWhile, etc.).
> 
> All "...By" function (nubBy, ..., minimumBy) take binary comparison
> arguments.

Hmm... splitWhen ?

However, by analogy with 'break' and 'span' it should be just 'split',
and if you want to split on white space, you say so: 'split isSpace'.

I also think, this version of 'split' (or whatever you want to call it)
is all that's needed, because

*> lines == split (== '\n')
*> words == filter (not.null) . split isSpace

and anyone who needs more than that is better served with alex, some
sort of regexes or Manuel Chakravarty's lexer combinators.


Udo.
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