&/pt: what changed

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

Title: &/pt

New		Line
1	+	<div style="float:left; margin: 0 25px 20px 0; padding:40px; font-size:500%; font-family: Georgia; background-color: #f9f9f9; border: 2px solid #777777;">
2	+
3	+	&
4	+
5	+	</div>
6	+
7	+	Em [[ASCII/pt\|ASCII]], o caractere de código decimal
8	+
9	+	``` pascal
10	+	38
11	+	```
12	+
13	+	(ou em \[\[Hexadecimal/pt\\|
14	+
15	+	``` pascal
16	+	$
17	+	```
18	+
19	+	\]\]
20	+
21	+	``` pascal
22	+	26
23	+	```
24	+
25	+	) é, por definição,
26	+
27	+	``` pascal
28	+	&
29	+	```
30	+
31	+	(chamado de “E comercial”).
32	+
33	+	## Pascal
34	+
35	+	### Base octal
36	+
37	+	Em [[Pascal/pt\|Pascal]] o
38	+
39	+	``` pascal
40	+	&
41	+	```
42	+
43	+	denota um número em base octal.
44	+
45	+	``` pascal
46	+	program messageNo(input, output, stderr);
47	+
48	+	uses
49	+	baseUnix;
50	+
51	+	begin
52	+	// withdraw group write access to current terminal
53	+	// equivalent to invoking: mesg n
54	+	fpChmod('/dev/stdin', &0600);
55	+	end.
56	+	```
57	+
58	+	In an octal base only the characters
59	+
60	+	``` pascal
61	+	0
62	+	```
63	+
64	+	through and including
65	+
66	+	``` pascal
67	+	7
68	+	```
69	+
70	+	are allowed. An optional sign is specified in front of the
71	+
72	+	``` pascal
73	+	&
74	+	```
75	+
76	+	.
77	+
78	+	As a passing remark, in a production program the number in the above example is better written as
79	+
80	+	``` pascal
81	+	fpChmod('/dev/stdin', S_IRUSR or S_IWUSR);
82	+	```
83	+
84	+	since it is more meaningful than having a raw number. Pascal is a high-level language. Use this advantage. Write what you mean, not what in fact the computer does.
85	+
86	+	> Note: Literais numéricos em octal não são suportados pelos modos \[\[Mode Delphi/pt\\|
87	+	>
88	+	> ``` pascal
89	+	> {$mode Delphi}
90	+	> ```
91	+	>
92	+	> \]\] e \[\[Mode TP/pt\\|
93	+	>
94	+	> ``` pascal
95	+	> {$mode TP}
96	+	> ```
97	+	>
98	+	> \]\].
99	+
100	+	### Caractere de escape
101	+
102	+	[[FPC\|FreePascal]] retroactively declared some new [[Reserved word\|reserved words]]. In order of being capable of compiling old code with an up-to-date [[Compiler\|compiler]] version, which might fail due to those new reserved words, FPC declared the
103	+
104	+	``` pascal
105	+	&
106	+	```
107	+
108	+	as an escape character. Thus, without refactoring the code but escaping, i.e. prepending an
109	+
110	+	``` pascal
111	+	&
112	+	```
113	+
114	+	to the [[Identifier\|identifier]], the compiler accepts the actual reserved word as a valid identifier. New code though shall come up with different identifier names, without utilizing this feature.
115	+
116	+	## Lazarus
117	+
118	+	No [[Lazarus/pt\|Lazarus]] o
119	+
120	+	``` pascal
121	+	&
122	+	```
123	+
124	+	é usado para
125	+
126	+	- indicar teclas de atalho em \[\[TMenuItem\\|
127	+	``` pascal
128	+	TMenuItem
129	+	```
130	+
131	+	\]\]
132	+
133	+	---
134	+	From the Free Pascal wiki, page "&/pt", as it stood on 2022-08-06 after a change by Kai Burghardt, 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).

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