isempty

check if a variable is an empty matrix or an empty list

Calling Sequence

t=isempty(x)

Arguments

x: vector or matrix or list
t: a boolean

Description

isempty(x) returns true if x is an empty matrix or an empty list.

Examples

a=1
isempty(a(2:$))
isempty(find(rand(1:10)==5))

<< isdef

Elementary Functions

isequal >>

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Last updated:
Wed Jan 26 16:23:40 CET 2011