As/de: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: As/de
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| 1 | + | \ | |
| 2 | + | Zurück zu den [[Reserved words/de|reservierten Wörtern]].\ | |
| 3 | + | \ | |
| 4 | + | Das reservierte Wort <b>as</b> gehört zur objektorientierten Programmierung.\ | |
| 5 | + | Das reservierte Wort <b>as</b> wird für die Typumwandlung (Typecast) eines Objektes in eine Klasse verwendet.\ | |
| 6 | + | Dafür muss das Objekt eine Instanz der Klasse sein.\ | |
| 7 | + | Beispiel:\ | |
| 8 | + | ||
| 9 | + | ``` pascal | |
| 10 | + | var | |
| 11 | + | objForm : TForm; | |
| 12 | + | ||
| 13 | + | begin | |
| 14 | + | ... | |
| 15 | + | // Typumwandlung auf dem Standardweg | |
| 16 | + | objForm := TForm1(Sender: TObject); | |
| 17 | + | ||
| 18 | + | // Typumwandlung von 'Sender' unter Verwendung des Schlüsselwortes As | |
| 19 | + | objForm := Sender As TForm1; | |
| 20 | + | ... | |
| 21 | + | ``` | |
| 22 | + | ||
| 23 | + | \ | |
| 24 | + | \ | |
| 25 | + | --Olaf 18:04, 30 October 2012 (UTC) | |
| 26 | + | ||
| 27 | + | --- | |
| 28 | + | *From the Free Pascal wiki, page "As/de", as it stood on 2020-01-31 after a change by GAN, 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).* | |
| 29 | + | Category: Reserved words/de |