[Haskell-cafe] Monoid wants a (++) equivalent
tonymorris at gmail.com
Tue Jun 30 19:26:51 EDT 2009
David Leimbach wrote:
> On Tue, Jun 30, 2009 at 11:54 AM, Brent Yorgey <byorgey at seas.upenn.edu
> <mailto:byorgey at seas.upenn.edu>> wrote:
> On Tue, Jun 30, 2009 at 09:45:45AM -0700, Bryan O'Sullivan wrote:
> > I've thought for a while that it would be very nice indeed if
> the Monoid
> > class had a more concise operator for infix appending than "a
> `mappend` b".
> > I wonder if other people are of a similar opinion, and if so,
> whether this
> > is worth submitting a libraries@ proposal over.
> IIRC Jules Bean has proposed using (+>) for this purpose, which I
> like. It has the advantages of (a) not clashing with any other
> (common) operators, (b) making more obvious the fact that mappend is
> not necessarily commutative, and (c) providing the obvious (<+) for
> 'flip mappend' which is sometimes useful.
> I actually think this proposal is pretty excellent.
I happen to agree.
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