> And I have no idea why they should want to: nesting is purely a
> question of namespaces and syntactic scoping. It should impact
> the implementation semantics not at all.
Oh, yeah ? I eagerly wait your implementation of draw_table for sample
below without trampolines (just remember: you can not alter for_each or
use any information about it's implementation - there are exist sparate
compilation units, you know). Oh, and of course such implementation
should work in multi-threaded environment as well...
-- cut --
procedure for_each(_from,_to:integer;procedure _do(x:integer));
var
i:integer;
begin
for i:=_from to _to do
_do(i);
end;
procedure draw_table;
var
y:integer;
procedure one_step(x:integer);
begin
write(x*y:4);
end;
begin
for y:=1 to 10 do begin
for_each(1,10,one_step);
writeln;
end;
end;
begin
draw_table;
end.
-- cut --
-
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