[TOC]

`isfield`

Determine if a structure array contains a given field

Usage

S is a structure array of any size.
field is a vector of characters representing a field name.
It returns a logical 1 if S contains a field named field. Otherwise, it returns a logical 0.

MATLAB	SIMO
`field` can be a cell array, so that it allows checking multiple field names.	Cell array not supported.
`field` can be a string	String not supported. Use character vector instead.

structure.field = 3
isfield(structure, 'field')
isfield(structure, 'not_a_field')

structure =
 struct with fields:
 field: [3.0000]

ans = 
1

ans = 
0

Nested structure. Here, s is a structure with the field ss, and ss is a structure with the field field.

s.ss = struct('field', 1)
isfield(s, 'ss')
isfield(s.ss, 'field')

s =
 struct with fields:
 ss: Struct [1 x 1]

ans = 
1

ans = 
1