On 2011-07-22 03:29, Simen Kjaeraas wrote:
On Fri, 22 Jul 2011 02:50:52 +0200, bearophile
<[email protected]> wrote:
Simen Kjaeraas:
int n;
string s;
unpack!(n,s) = tuple(4, "O HAI");
See my other answer. Beside being long and ugly, it doesn't define the
types too. And you can't use it in foreach.
Yeah, I can absolutely see that there are places where this could not
reasonably be used. Initializing const and immutable data definitely is
one. And being able to use it in a foreach would be very nice.
Something that might take us part of the way, at least, would be for
alias this to support typetuples. Thus:
struct Tuple(T...) {
T fields;
alias fields this;
}
void foo(int n, string s) {}
foo(tuple(3, "bar"));
would work. Foreach would direcly benefit from this:
foreach (x, y; zip([1,2,3], "abc")) {} // Look ma! No bananas!
That would be really nice.
--
/Jacob Carlborg
