Re: [Haskell-cafe] Monoid wants a (++) equivalent

Am Dienstag 30 Juni 2009 20:56:10 schrieb David Leimbach:

On Tue, Jun 30, 2009 at 11:54 AM, Brent Yorgey wrote:

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On Tue, Jun 30, 2009 at 09:45:45AM -0700, Bryan O'Sullivan wrote:

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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".

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I wonder if other people are of a similar opinion, and if so, whether

this

...

is worth submitting a libraries@ proposal over.

+1.

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 actually think your assessment of the proposal is correct.