Checking whether an object is a handle or not
We can check whether an object is a handle or not by using the is a() function.
Syntax
isa(object-name, ‘handle’)
it is a Boolean function and returns true if the object is a handle. See the example below to understand.
Example 5:
Matlab
% Code ax = axes; x=22; fprintf('checking for object handle ax:') disp(isa(ax,'handle')) fprintf('checking for some variable x: ') disp(isa(x,'handle')) |
In this example, we create an axes object and a variable. Then we check with is a() for the object handle. The output will be in Boolean as follows.
Output:
As it can be seen, ax is a handle however, x is not.
Handle Object Behavior in MATLAB
Handles in MATLAB are data type that points to an object. The handles can be used to point to an object from different references or to pass a function to another function as an input argument.
We shall not explain the creation and usage of MATLAB handles, as they are out of this article’s scope. However, MATLAB handles have some special properties that we shall discuss in this article.