Type Identification
===================


class
-----
**Syntax** ::

  class(x)

**Description**

Returns a string specifying the class or data type of input operand,
``x``. Output may include one of the following types: ``logical, char,
cell, struct, function_handle, intN, uintN,`` or ``double``.

iscell
------
**Syntax** ::

  iscell(x)

**Description**

Deterimines whether the input is a cell array. Returns the true
logical value whenever ``x`` is a cell array and otherwise returns the
false logical value.

isempty
-------
**Syntax** ::

  isempty(x)

**Description**

Determines whether the input is an empty array. Returns the logical
true value whenever ``x`` is an array that has at least one dimension
of size zero, and the false logical value otherwise.

isscalar
--------
**Syntax** ::

  isscalar(x)

**Description**

Determines whether the input is scalar. Returns the logical true value
whenever ``size(x)=[1 1]``, and the false logical value otherwise.

isvector
--------
**Syntax** ::

  isvector(x)

**Description**

Determines whether the input is a vector. Returns the true logical
value whenever ``size(x)=[1 n]`` or ``size(x)=[n 1]`` and ``n`` is a
non-negative integer, otherwise, it returns the false logical value.

ismember
--------
**Syntax** ::

  ismember(s,x)

**Description**

Determines if the string, ``s``, exists within the cell array of
strings, ``x``. For example, ``ismember('findMe', x)`` returns the
logical false value when ``x={'foo', 'bar', 'bash'}`` and the logical
true value when ``x={'foo', 'findMe', 'bash'}``.