Re: template expressions in C++ to an equivalent in D

2011-10-30 Thread Trass3r 

I was thinking about porting http://eigen.tuxfamily.org/index.php in D.


Don't we have a LinAlg library now thx to that GSoC project?

I'm currently on SFML2 but it goes quite fast (thanks to  Trass3r for  
porting SFML to D2 so a big part of the job is done).


You're welcome.

template expressions in C++ to an equivalent in D

2011-10-28 Thread Dominic Jones 
Hello,

I want to compute, for example
d = a + b + c
where a..d are of some derived type, without incurring the cost of temporaries 
for each overloaded operation.

In a similar post a while ago, Walter Bright proposed using function literals 
instead of template expressions to do this. After looking at function literals, 
I can't work out what he had in mind with this suggestion. May someone present 
a succinct
complete example to demonstrate how solve this?

Many thanks,
Dominic Jones

Re: template expressions in C++ to an equivalent in D

2011-10-28 Thread deadalnix 

Le 28/10/2011 19:18, Dominic Jones a écrit :

Hello,

I want to compute, for example
d = a + b + c
where a..d are of some derived type, without incurring the cost of temporaries 
for each overloaded operation.

In a similar post a while ago, Walter Bright proposed using function literals 
instead of template expressions to do this. After looking at function literals, 
I can't work out what he had in mind with this suggestion. May someone present 
a succinct
complete example to demonstrate how solve this?

Many thanks,
Dominic Jones


I was thinking about porting http://eigen.tuxfamily.org/index.php in D. 
I'm currently on SFML2 but it goes quite fast (thanks to  Trass3r for 
porting SFML to D2 so a big part of the job is done).


You may want to do so ? Anyway, I'm not surefunction literal can do the 
trick. I would be interested on knowing more on the topic. If it is more 
suitable, maybe I should reconside my project to port eigen.


Deadalnix