[Seed7-users] Pointer to function as argument

[L. S. <lsp...@gm...>]

Hi
Just started learning seed7 a few days ago.
Not totally convinced yet but it seems a useful language so far, much
better than it's popularity suggests.

1. I'm currently trying to pass a pointer to a function to another function:
  tester(a,b,myfun(a,b));

const proc: tester (in var integer: a, in var integer: b, ref func integer:
fun) is func
local
begin
a := 10;
b := 20;
writeln("Value of fun: " <& fun);
writeln("end");
writeln("inside: a = " <& a);
writeln("inside: b = " <& b);
end func;

The arguments to "myfun" seems to be evaluated when calling tester or at
compile time. How do I change the arguments 'a' and 'b' at runtime.

2. By curiosity I wonder why I can write:
boolean parse "TRUE"
but not
writeln "something"                      [without parentheses!]