Proposal: Add concatMapM function (#2042)
lemming at henning-thielemann.de
Fri Feb 1 09:07:44 EST 2008
On Sat, 2 Feb 2008, Roman Leshchinskiy wrote:
> Bulat Ziganshin wrote:
> > Hello Roman,
> > Friday, February 1, 2008, 11:03:36 AM, you wrote:
> >>> the right way to deal with "modifiers" is to attach them to the Handle
> >>> itself like this:
> >>> f <- openFile "name" >>= withLocking >>= withEncoding utf8
> >> IMO, global state is never "the right way" if it can be avoided. It will
> >> always lead to problems. Especially in a functional language like Haskell.
> > so you propose something like this:
> > s <- readString "/path/filename" TextMode "utf8" line_num
> No. In my view, file handles and encodings exist on completely different
> levels of abstraction.
What about changing the subject in order to preserve the thread for
further contributions to the concatMapM issue?
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