Custom Blocks

[Lutger]

Chris Williams wrote:

...
> That brings us to the second problem. Our last parameter for a custom
> block is always "void delegate()" and our return is always void.
> There's nothing to be gained by forcing the coder to write both.
> 

ruby blocks have a special syntax for block parameters and foreach in D has it 
too. It could look like:

void until(int limit, void delegate(int) dg);

until(5 ; i) {
   ...
}

But maybe that is too weird, I dunno. Parameters are reversed here too wrt 
foreach.