How to inherite and intialize object values

classdef inputDef
    properties
        nMatch
    end
    methods
        function obj = inputDef(varargin)
            p = inputParser;
            p.addParameter('nMatch', 1, @isnumeric);
            p.parse(varargin{:});
            obj.nMatch = p.Results.nMatch; % Position of the sorting parameters
        end
    end
end

I have a superclass inputDef which has propety nMatch. I create an object and assign a value as below

>>in = inputDef
>>in.nMatch = 2

How do I inherit inputDef in a another class such that I can get

>> out = outDef(in)
>> out.nMatch = 2

classdef outDef < inputDef
    properties
        ...
    end
methods
    function obj = outDef(obj1)
             obj = obj1
    end
end
end

Please give some idea. Thanks in advance

Answer 1

[Matt J]

What you've shown would work, but you have to actually assign the properties,

  function obj = outDef(obj1)
  
             obj.nMatch = obj1.nMatch;
             
             obj.prop1=_____
             obj.prop2=_____
             etc...
  end

Answer 2

[per isakson]

"How do I inherit inputDef in a another class such that [...]"

See Composition over inheritance and try

%%
in = inputDef();
in.nMatch = 2;
%%
out = outDef( in );
%%
out.val.nMatch

outputs

ans =
     2     

where

classdef inputDef
    properties
        nMatch = 0;
    end
    methods
        function obj = inputDef(varargin)
            p = inputParser;
            p.addParameter('nMatch', 1, @isnumeric);
            p.parse(varargin{:});
            obj.nMatch = p.Results.nMatch; % Position of the sorting parameters
        end
    end
end

and

classdef outDef  
    properties
        val
    end
    methods
        function this = outDef( obj )
            this.val = obj;
        end
    end
end

That's the standard way, however, to get a bit closer to your proposed code

classdef outDef < inputDef
    properties
    end
    methods
        function this = outDef( obj )
            this.nMatch = obj.nMatch;
        end
    end
end

but that looks weird to me. Anyhow, out.nMatch, returns 2

>> out.nMatch
ans =
     2
>> 

And see Comparison of Handle and Value Classes