what's property validation? in matlab

In MATLAB, property validation is a technique used to validate the properties or values of objects/classes being created.

Here's how to implement it in MATLAB:

1. Define a set method for the property you want to validate.
2. Inside the set method, write the validation code for the property.
3. If the validation fails, throw a MATLAB error.

Here is an example code snippet that demonstrates property validation:

main.m
classdef MyClass
   properties
      x {mustBeNumeric, mustBePositive}
   end
end
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In this example, the class MyClass contains a property x which must be numeric and positive. The mustBeNumeric and mustBePositive functions are built-in validation functions in MATLAB. If the user tries to set the value of x to a non-numeric value or a negative value, MATLAB will throw an error.

You can also create your own validation functions in MATLAB, and use them in the set method for your properties.

main.m
classdef MyClass
   properties
      x {mustBeMyCustomValidationFcn}
   end
end

function mustBeMyCustomValidationFcn(x)
   if ~myCustomValidation(x)
      error('Value must satisfy my custom validation criteria.');
   end
end

function tf = myCustomValidation(x)
   % insert arbitrary validation logic here
end
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In this example, mustBeMyCustomValidationFcn is a custom validation function that checks if the value of x satisfies some custom criteria, implemented in the myCustomValidation function. If myCustomValidation returns false, mustBeMyCustomValidationFcn throws an error.