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

## Syntax

    t=isempty(x)

## Arguments

x

  vector, matrix or list

t

  a boolean

## Description

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

isempty() can be overloaded for custom t-lists and m-lists typeof.

## Examples

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

## See also

- []
- emptystr
- size
- length

## History

6.0.2 isempty() can now be overloaded for custom tlist and mlist typeof.