isvar

This function is used to check if variables are defined before accessing them.

Synopsis

	function isvar( 
		varnames:string
	)

Arguments

varnames: varnames must be an array of strings, but can have any dimension.

Description

For each element in the varnames parameter, isvar returns, True if the element is a defined variable and False if not. The output of isvar is a logical array with the same dimensions as the varnames parameter.

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$Revision: 1.5 $ $Date: 1998/06/15 21:30:01 $