problem with the variadic template
baleog
maccarka at yahoo.com
Sat Jul 5 15:19:09 PDT 2008
Hello
I want to write "map" function with the Common Lisp "mapcar" behaviour. But i don't understand how to write one template for the N-argument delegate.
This is how it works now:
T[] map(T, T1)(T delegate(T1) fun, T1[] xs) {
T[] result; result.length = xs.length;
foreach (i,x; xs)
{
result[i] = fun(x);
}
return result;
}
T[] map(T,T1,T2)(T delegate(T1, T2) fun, T1[] xs, T2[] ys) {
T[] result; result.length = reduce!(min)(xs.length,[ys.length]);
for (int i = 0; i<result.length; ++i)
{
result[i] = fun(xs[i], ys[i]);
}
return result;
}
How can i improve the code?
Thank you
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