Re: [Boost-users] [Tuple] What's the point?

Zachary Turner wrote:

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On Fri, Jul 10, 2009 at 11:26 AM, Joel de Guzman wrote:

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functional languages if you need to manually operate on each element of a tuple other methods are provided like matching. I actually think that it might be possible to achieve some matching like constructs in C++, but I don't think (?) much if any research has been devoted to that. Erm... every sentence above begs the question: why?

? I'm not sure what you mean by this sentence begging the question of why. If you know of any research that has been done regarding match constructs in C++ then please refer me to it. But the reason I don't think much has been done is because I've never heard of any. OTOH I don't claim to be aware of everything going on in the C++ world, so I'd be interested to read any such research you know of.

For this case, we are actually in agreement. And, actually, I am investigating pattern matching (like in FP) for Fusion. Yes, in many cases, this is very powerful. I can agree with you that simple iteration is too low level. But Fusion is not limited to plain for_each iteration. The power is in the composition of the algorithms to do more complex functionalities, like pattern matching, complex traversals, etc. Regards, -- Joel de Guzman http://www.boostpro.com http://spirit.sf.net