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 $