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Topic: using later defined procedures (Read 1510 times)
nugax
Full Member
Posts: 232
using later defined procedures
«
on:
February 23, 2018, 06:49:35 pm »
This is remedial, i know... but its driving me nuts.
If i have a procedure that calls a procedure that is defined later, how can I use it? Is there a way to declare it so it can be used now in a procedure, yet defined later?
Logged
-Nugax
rvk
Hero Member
Posts: 6163
Re: using later defined procedures
«
Reply #1 on:
February 23, 2018, 06:55:56 pm »
Like this:
http://wiki.freepascal.org/Forward_Referencing
Code: Pascal
[Select]
[+]
[-]
procedure
Later
(
parameter list
)
;
forward
;
procedure
Sooner
(
parameter list
)
;
begin
...
Later
(
parameter list
)
;
end
;
...
procedure
Later
;
begin
...
Sooner
(
parameter list
)
;
end
;
Logged
Eugene Loza
Hero Member
Posts: 674
Re: using later defined procedures
«
Reply #2 on:
February 23, 2018, 08:15:37 pm »
or like this
Code: Pascal
[Select]
[+]
[-]
Unit
SomeUnit
;
interface
procedure
Later
;
//makes it also available for other units, mark no "forward" here.
implementation
procedure
Sooner
;
begin
Later
;
end
;
procedure
Later
;
begin
DoSomething
;
end
;
Logged
My FOSS games in FreePascal&CastleGameEngine:
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(Sources:
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