New: what changed

Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.

Title: New

New		Line
1	+	Back to [[Reserved words]].
2	+
3	+	The reserved word new:
4	+
5	+	- belongs to object-oriented programming;
6	+	- creates a new instance.
7	+
8	+	Example 1:
9	+
10	+	``` pascal
11	+	var
12	+	intI : ^ Integer ;
13	+
14	+	begin
15	+	...
16	+	if assigned ( intI ) then ... // Checks whether an address has been assigned to intI
17	+	...
18	+	new ( intI ) ; // Assigns a valid address to intI
19	+	...
20	+	dispose ( intI ) ; // Releases the address
21	+	...
22	+	```
23	+
24	+	Example 2:
25	+
26	+	``` pascal
27	+	grade
28	+	PListItem = ^ TListItem ;
29	+	TListItem = record
30	+	data : string ;
31	+	next : PListItem ; // reference to the next element
32	+	end ;
33	+
34	+	var
35	+	List : PListItem ;
36	+
37	+	begin
38	+	...
39	+	New ( list ^. Next ) ; // Adds a new item to the list
40	+	List ^. next ^. data : = '' ; // empties the element
41	+	List ^. next ^. next : = nil ; // sets the following pointer to nothing for security
42	+	...
43	+	dispose ( list ) ; // Releases the list
44	+	...
45	+	```
46	+
47	+	---
48	+	From the Free Pascal wiki, page "New", as it stood on 2020-02-21 after a change by Trev, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).