File: tgeneric33.pp

package info (click to toggle)
fpc 3.2.2%2Bdfsg-49
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 341,452 kB
  • sloc: pascal: 3,820,194; xml: 194,356; ansic: 9,637; asm: 8,482; java: 5,346; sh: 4,813; yacc: 3,956; makefile: 2,705; lex: 2,661; javascript: 2,454; sql: 929; php: 474; cpp: 145; perl: 136; sed: 132; csh: 34; tcl: 7
file content (37 lines) | stat: -rw-r--r-- 665 bytes parent folder | download | duplicates (13)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
program tgeneric33;

{$mode objfpc}{$H+}
type
  // regular procdef
  generic TProc1<T> = function(Value: T): T;
  // object procdef
  generic TProc2<T> = function(Value: T): T of object;

  TFoo = class
    function Test2(Value: Integer): Integer;
  end;

function Test1(Value: Integer): Integer;
begin
  Result := Value + 1;
end;

function TFoo.Test2(Value: Integer): Integer;
begin
  Result := Value - 1;
end;

var
  Foo: TFoo;
  Proc1: specialize TProc1<Integer>;
  Proc2: specialize TProc2<Integer>;
begin
  Proc1 := @Test1;
  if Proc1(1) <> 2 then
    halt(1);
  Foo := TFoo.Create;
  Proc2 := @Foo.Test2;
  if Proc2(2) <> 1 then
    halt(2);
  Foo.Free;
end.