SRL Archive - FAQ

Don't ask how I got to this point. All I know is that this compiles:

function lol():function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:function:boolean;
begin
end;

begin

end. 

A function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a function that results in a boolean?

Sure I guess.

(I don't know if that's what it actually means)

From: Clarity
A function that results..
Sure I guess.

(I don't know if that's what it actually means)

function foo: boolean;
begin
  writeln('Here');
end;

function lol():function:function:function:function:boolean;
begin
  Result := @(Foo);
end;

var
  T: function: Boolean;
begin
  T := lol();
  T();
end.

Is equivalent to:

function foo: boolean;
begin
  writeln('Here');
end;

function lol():function:boolean;
begin
  Result := @(Foo);
end;

var
  T: function: Boolean;
begin
  T := lol();
  T();
end.

Both return a pointer to a function with no extra indirections..


Think that's weird? Check out:

function foo(I: Integer): boolean;
begin
  writeln(I);
end;

begin
  foo()()()()()()(3);
end.

or

Function Bleh: Boolean;
begin
  writeln('Bleh');
end;

Function meh(H, W: String): Function:Boolean;
begin
  writeln(H, W);
  Result := @(Bleh);
end;

function foo(I: Integer; S: Single): Function(H, W: String): Function:Boolean;
begin
  writeln(I);
  writeln(S);
  Result := @(Meh);
end;

begin
  foo(3, 5)()()('Hello', ' World')()()()()()()()();
  foo(3, 5)('Hello', ' World')();
end.

for semi-obfuscation and chain calling..

Heh, I figured I was off. Interesting though, thanks for clarifying.

From: Clarity
Heh, I figured I was off. Interesting though, thanks for clarifying.

Get it?

From: Brandon
…

Nice, nice didn't even know I could return a function of a function

This thread has been a roller coaster ride the entire time.