Re: [Haskell-cafe] FGL instance constraint

Sorry for the useless noise, I realised just after I sent this that that is what Jason said initially :s On 1 May 2010 17:02, Ivan Lazar Miljenovic wrote:

"Brandon S. Allbery KF8NH" writes:

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On May 1, 2010, at 02:38 , Jason Dagit wrote:

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Why wasn't the Graph class designed this way?  My guess:  It was probably a decision that predated multiparameter type classes.

Or a specific decision was made to stick to Haskell'98 compatibility.

I would also hazard a guess that it predates MPTCs (but don't know when that extension that came out so I can't be sure).

-- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com

-- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com