Data.Generics vs. Template Haskell

[Chris Kuklewicz]

Bulat Ziganshin wrote:
> Hello Vyacheslav,
> 
> Thursday, August 24, 2006, 11:51:46 PM, you wrote:
> 
>> I am trying to figure out where these two libraries stand in relation
>> to each other and which one is preferred to do generic programming in
>> Haskell. I understand that their goals often intersect but couldn't
>> find any good comparisons. Could someone point me in the right
>> direction?
> 

> summary: if your task fits into the features provided by g.p. tools,
> you will gain a much time using them. if your task need compile-time
> code generation (so that generic program will be no slower than
> hand-written one) or you need some advanced features which your g.p.
> tool doesn't provide - welcome to TH with all its programming
> oddities. development of TH routines for g.p. is an order of magnitude
> slower (at least!) than doing the same with specialized tool
> 
> 

TH and generics can be synergistic:  Generics reduce the amount of code you need 
to write to add new cases compared to more verbose techniques, and TH can 
automate writing some of the remaining boilerplate code.