foreach, opApply, and inline

[BCS]

Reply to Tor,

> BCS <ao at pathlink.com> wrote:
> 
>> I have often though that the inlining should work in the more general
>> case where small function get called with a known delegate.
>> 
> I don't think it should in general; if the "small function" calls the
> delegate multiple times, this can result in extremely bloated code.
>

Well of course any optimization needs to be implemented with some sanity 
checks.

What I want to be dealt with is the idiom where a call to a small function 
takes a delegate literal. Say something like this

void Attr(char[] s)(void delegate() dg
{
  writef("<"~s~"> ");
  scope(exit) writef("<"~s~"> ");
  dg();
}

alias Attr!("b") Bold
alias Attr!("http") Doc
alias Attr!("body") Body
alias Attr!("head") Head

Doc({
  Head({
    ...
  });
  Body({
    writef("Hello ");
    Bold({
      writef("world");
    });
  });
});