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Changing variable (properties in class) by method

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Pawel Gagatek
Pawel Gagatek on 20 Nov 2018
Answered: Steven Lord on 20 Nov 2018
classdef ClassName
properties
PropertyName
end
methods
function [obj ] = ClassName()
obj.PropertyName = 0;
end
function [ ] = MethodName(obj,arg1,...)
obj.PropertyName=obj.PropertyName+5;
end
function [ ] = MethodName2(obj,arg1,...)
obj.PropertyName=obj.PropertyName/2;
end
end
end
The question is how i can modify code to modify variable in properties by method.

Accepted Answer

Steven Lord
Steven Lord on 20 Nov 2018
Your class is a value class as opposed to a handle class. See this documentation page for a description of the differences between the two. The "Modifying Value Objects in Functions" and "Modifying Handle Objects in Functions" sections on that documentation page describe what happens when you modify properties of an instance of each kind of class in a function or method. So you can either:
  1. Define the methods in your value class to return the modified object, and call the methods with the object as both input and output.
  2. Change your class to a handle class.

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