[Haskell-cafe] Monoid wants a (++) equivalent
ekmett at gmail.com
Wed Jul 1 10:46:27 EDT 2009
I'm rather fond of the (<>) suggestion, but would be happy with anything
better than mappend! ;)
On Wed, Jul 1, 2009 at 8:56 AM, Brent Yorgey <byorgey at seas.upenn.edu> wrote:
> On Wed, Jul 01, 2009 at 12:00:50AM -0400, ajb at spamcop.net wrote:
> > G'day all.
> > On Tue, Jun 30, 2009 at 08:02:48PM -0400, Daniel Peebles wrote:
> >> But we don't want to imply it's commutative either. Having something
> >> "bidirectional" like <> or <+> feels more commutative than associative
> >> to me.
> > Quoting John Meacham <john at repetae.net>:
> >> Not really, think of '++', which doesn't commute but is visually
> >> symmetric, or Data.Sequence.<>, or the common use of <> to mean
> >> concatination in pretty printers.
> > Other good examples are && and ||.
> ..wha? But those ARE commutative. Unless you mean with respect to
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