Re: [boost] [MPL] interest in algo that creates all possible permutations of a type?

From: Kevin Sopp (baraclese_at_[hidden])
Date: 2005-11-11 16:14:17

>From: Alberto Ganesh Barbati <abarbati_at_[hidden]>

>I'm sorry I'm not an MPL expert so I can't give you feedback about the
>usefulness of this class. It looks interesting though. What I would like
>to say is that you should choose a name different from "permute" because
>it is misleading.

I was actually looking for a better name myself but couldn't come up with 
one, other than 'generate' :-) Combine sounds alright to me.

>Moreover you say that the synthesized list has no particular
>order. This looks a very different operation to me.

Of course the order of the resulting types is not random. Observing the 
output of my test program with the following argument lists and T = 
base<_1,_2>:
args1 = 0,1
args2 = 0,1,2,3

the resulting vector will contain the types in the following order:
base<0,0>,
base<0,3>,
base<0,2>,
base<0,1>,
base<1,0>,
base<1,3>,
base<1,2>,
base<1,1>

I uploaded the code for binary lambda expressions at 
http://oceanstar.sourceforge.net/combine.h

Kevin Sopp

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