On Saturday, 16 February 2013 at 21:31:05 UTC, Jonathan M Davis
wrote:
On Saturday, February 16, 2013 22:24:19 Lemonfiend wrote:
On Saturday, 16 February 2013 at 21:03:54 UTC, Dicebot wrote:
> http://dlang.org/expression.html#FunctionLiteral
>
> Function parameters/variables are declared in D using
> "ReturnType function(ParameterTypes) symbol". "function" is a
> keyword here, it can be swapped for "delegate" to get, em,
> delegates.
>
> In your case something like "void function(int) callback"
> will
> do.
You mean this?
void foo(int[] arr, int cmp, void function(int) callback)
{
foreach(int val; arr)
{
if(val == cmp)
callback(val);
}
}
But how do I then pass bar to foo?
void bar(int val)
{
writeln(val);
}
This doesn't work:
foo([0,1,2], 1, bar);
foo([0, 1, 2], 1, &bar);
should work. void function(int) is a function pointer, so you
need to pass it
a pointer to a function. bar by itself is attempting to call
the function
(which won't work due to a lack of arguments). It's discussed
in the link to
the documentation that Dicebot gave you.
- Jonathan M Davis
Ah you're right, it does, thanks.
I find the D documentation to generally be very hard to read :(
