On Fri, 29 Mar 2013 13:56:08 +0100, bearophile <bearophileh...@lycos.com>
wrote:
One handy tuple syntax in Haskell allows you to name both the items of a
tuple and it whole:
void foo(t2@{int a, string b}) {
// here a and b are tuple items and t2 is the whole tuple.
}
auto t1@{x, y} = {10, "hi"};
foo(t1);
I suggest instead this syntax:
auto {x, y} t1 = {10, "hi"};
It's closer to regular D syntax.
foreach (Float; {float, double, real}) { ... }
I think you meant to put a variable name there.
foreach (Type; {float, double, real}) { ... }
See it now?
- - - - - - - - - - - -
{c, $} = tup; // Rewritten as: c = tup[0];
$ is used for array lengths, so it's not so good to overload it to mean
"don't care" too.
Alternative syntaxes:
{c, $_} = tup;
{c, @} = tup;
{c, @_} = tup;
{c, $$} = tup;
{c, {}} = tup;
{c, {_}} = tup;
{c, $~} = tup;
{c, @~= tup;
etc.
... has been introduced to match zero or more elements for pattern matching
already. I see no reason not to use ... for this.
--
Simen
