[Haskell-cafe] "desactivate" my Show instance implementations temporarily

TP paratribulations at free.fr
Sun Apr 22 11:55:38 CEST 2012

On Sunday 22 April 2012 19:37:19 Ivan Lazar Miljenovic wrote:

> Is there any particular reason you're *not* using the defaults?

This is a good question which I have asked myself. I have searched about the 
topic, and found that:


So, according to this address, Show implementation should be used with Read so 
as to have show.read equal to identity: this is the only "good practice 

In my case, I use Show to print mathematical expressions, but it is not 
strictly pretty printing (not over several lines as in classical Computer 
Algebra Sytems). Why not using my own Show implementation to do that?


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