June 2012
Intermediate to advanced
1200 pages
30h 40m
German
Content preview from Microsoft Access 2010 Programmierung - Das Handbuch
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Datentypen, Variablen und Konstanten
Jede Programmiersprache »lebt« in erster Linie von den zur Verfügung stehenden Variablentypen und Konstanten, die wiederum bestimmten Datentypen entsprechen.
Übersicht
Die folgende Tabelle gibt eine Übersicht der standardmäßig zur Verfügung stehenden Datentypen. Neben den genannten Datentypen lassen sich auch benutzerdefinierte (strukturierte) Datentypen mit der Type-Anweisung deklarieren (siehe „Benutzerdefinierte Datentypen“).
Tabelle 2.1 Die grundlegenden VBA-Datentypen
Datentyp | Speicherbedarf | Erläuterung | Typkennzeichen |
|---|---|---|---|
Byte | 1 Byte | Ganzzahl zwischen 0 und 255 | |
Boolean | 2 Byte | Wahrheitswert (True = –1/False = 0) | |
Integer | 2 Byte | Ganzzahl zwischen –32.768 und +32.767 | % |
Long | 4 Byte | Lange Ganzzahl (Long Integer) zwischen –2.147.483.648 ... |
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.