MATLAB Object-Oriented Programming

S contains:

S.type = '()'

S.subs = {2,3}

The built-in subsasgn:

• Determines the class of A. If B is not the same class as A, then MATLAB tries to
  construct an object of the same class as A using B as an input argument. If this
  attempt fails, MATLAB returns an error.


• If A and B are, or can be made, into the same class, then MATLAB assigns the value of
  B to the array element at row 2 , column 3.


• If A does not exist before you execute the assignment statement, then MATLAB
  initializes the five array elements that come before A(2,3) with default objects of
  class B.

Similarly, this expression

A{2,3} = B

Uses these values for S:

S.type ='{}'

S.subs = {2,3}

The built-in subsasgn:

• Assigns B to the cell array element at row 2 , column 3.


• If A does not exist before you execute the assignment statement, MATLAB initializes
  the five cells that come before A(2,3) with []. The result is a 2-by-3 cell array.

This expression:

A.Name = B

Calls A = subsasgn(A,S,B) where the struct S has these values:

S.type = '.'

S.subs = 'Name'

The built-in subsasgn:

• Assigns B to the struct field Name.

17 Specialize Object Behavior