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Testing for presence of an array?

Message

De

04/05/2005 19:21:10

Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivie

À

04/05/2005 19:18:37

Randy Waldman
Hoffer Companies
Houston, Texas, États-Unis

Information générale

Forum:

Visual FoxPro

Catégorie:

Codage, syntaxe et commandes

Titre:

Re: Testing for presence of an array?

Versions des environnements

Visual FoxPro:

VFP 7 SP1

OS:

Windows XP SP2

Network:

Windows 2000 Server

Database:

Visual FoxPro

Divers

Thread ID:

01011099

Message ID:

01011101

Vues:

16

>Hi. How do you test for the presence of an array?
>
>Thanks, Randy

I think it is something like this:

if type("MyVar") # "U"
  * The variable or array exists
endif

if type("MyVar(1)") # "U"
  * The variable exists, and is an array
endif

You might also test with vartype() (without the quotation marks), which is supposed to be faster.

Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)

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