[Haskell-cafe] Monoid wants a (++) equivalent
leimy2k at gmail.com
Tue Jun 30 14:56:10 EDT 2009
On Tue, Jun 30, 2009 at 11:54 AM, Brent Yorgey <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`
> > I wonder if other people are of a similar opinion, and if so, whether
> > 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.
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