Any chance to call Tango as Extended Standard Library

[BLS]

BLS schrieb:
> Andrei Alexandrescu schrieb:
>> Jarrett Billingsley wrote:
>>> On Sun, Jan 18, 2009 at 1:00 PM, dsimcha <dsimcha at yahoo.com> wrote:
>>>> Nice.  Glad to see that this is documented somewhere so I can start 
>>>> playing with
>>>> it.  One thing, though:  In my dstats library, I have a custom hash 
>>>> table
>>>> implementation that's used very heavily in my information theory 
>>>> module.  (I have
>>>> my reasons for using a custom hash table instead of the builtin, but 
>>>> they're
>>>> beyond the scope of this post.)  Right now, the hash table uses 
>>>> opApply.  Now that
>>>> I realize how horribly slow opApply is, I'd like to port this to 
>>>> ranges.  However,
>>>> I need to be able to iterate over either key, value pairs or just 
>>>> values.  Is
>>>> there any way to make this work with ranges?
>>>>
>>>
>>> You could handle key or value iteration by using a proxy struct type
>>> that follows the range protocol, and have your hash table return one
>>> of those structs from methods such as "keysIter" or "valuesIter".  But
>>> unless I'm mistaken, D2 still doesn't support returning tuples, so you
>>> still can't have keys _and_ values at the same time.  (Unless you're
>>> content with using a Pair or something.)
>>
>> Returning a std.typecons.Tuple is entirely possible.
>>
>> Andrei
> 
> tuple(K,V) foo(K,V)(K k, V v)
> {
>   ...
> }
> ????, I have no idea, pls help Bjoern
> 

Look like this works... However it would be nice if we could place the 
alias Tuple Pair stuff outside of foo()
module tt;
import std.stdio;
import std.typecons;

//alias Tuple!(K, "key", V, "value") Pair; This don't work

auto foo(K,V)(K k, V v)
{
	alias Tuple!(K, "key", V, "value") Pair;

   	Pair P;
   	P.key = ++k;
   	P.value = v;

   	return P;
}

void main()
{
	//Pair KV;
	auto KV = foo!(int,string) (10,"Hello");
	writefln("%8s %s\n", KV.key, KV.value);
	
}
This is a really nice feature, guess there are smarter ways to implement 
tuple returns..
Bjoern