On 06/17/13 13:23, TommiT wrote:
> On Monday, 17 June 2013 at 11:15:24 UTC, Artur Skawina wrote:
>> void bar(T...)(T values) {
>> T tmp;
>> foreach (i, ref v; values)
>> tmp[i] = arr[v]*10;
>> foo(tmp);
>> }
>
> Cool, I didn't know that you could create multiple variables like that (T
> tmp).
A more correct, but a bit less readable version (the types of 'values' and 'arr'
elements do not have to match) would be:
void bar(T...)(T values) {
static if (T.length) {
NTup!(T.length, typeof(arr[T[0].init])) tmp;
foreach (i, ref v; values)
tmp[i] = arr[v]*10;
foo(tmp);
}
else
foo();
}
template NTup(size_t N, T...) {
static if (N>1)
alias NTup = NTup!(N-1, T, T[$-1]);
else
alias NTup = T;
}
artur
