Exists Method

Description

Returns VARIANT_TRUE (-1) if a specified key exists in the Dictionary object, VARIANT_FALSE (0) if it does not.

PowerBASIC Syntax

METHOD Exists ( _

BYREF vKey AS VARIANT _

) AS LONG

Arguments

vKey	Key value being searched for the Dictionary object.

Return Value

Boolean. VARIANT_TRUE or VARIANT_FALSE.

Example [PowerBASIC]

#INCLUDE "windows.inc"

#INCLUDE "scrrun.inc"

DIM pDic AS IDictionary

DIM vKey AS VARIANT

DIM vItem AS VARIANT

DIM bExists AS LONG

' Create an instance of the Dictionaty object

pDic = NEWCOM "Scripting.Dictionary"

' Add some key/item pairs to the dictionary

vKey = "a" : vItem = "Athens"

pDic.Add vKey, vItem

vKey = "b" : vItem = "Belgrade"

pDic.Add vKey, vItem

vKey = "c" : vItem = "Cairo"

pDic.Add vKey, vItem

' Check if the key "c" already exists

vKey = "c"

bExists = pDic.Exists(vKey)

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