Evaluating Method for multiple Objects, without using Eval

Good Evening together !

I am working with two classes:

Class I

Properties : temperature

pressure

components ( is a cell array of objects of the Class 2)

%Varying size dependent of No of Components in the Class 1

Class 2

methods : saturationPressure(obj, Temp)

classdef Class 1  
    properties   
        pressure
        temperature
        molarFlow
        components
        
    end
    .
    .
    .
    function value = boilingPoint(obj,T)
        .
        .other_functionstufff       .
        .
        . % Need to evaluate the saturationPressure method of the the given components
        for i = 1:numel(obj.components)
            obj.#{components}#.saturationPressure.(obj.components{i},T)
                        
        end
        .
        .
        
        

Three Questions:

1. Is there a way to evaluate the saturationPressure method of Class2 objects for all components of Class 1, without evalin?

2. Is there generally a better approach to evaluate methods of Objects inside a method of another Class

3. Or is there a obvious more clever way to achieve the same task (other datatype of components or similar )?

I would be very thankfull for help, i have the feeling i am oversseing something obvious -.-'

Thank You!

Answer 1

[per isakson]

Q1: Yes (I don't understand why you thought of using eval/evalin.)

Q2: ???

Q3: Yes, e.g. array of instancies of Class_2

The demo below addresses your questions. It's nonsence from the point of view of physical chemistry, but will hopefully help you use Matlab.

>> c1 = Class_1(4);
>> c1.boilingPoint(112)
ans =
   54689       95751       96489       15762
>> 

where

classdef    Class_1 < handle
    properties
        pressure
        temperature
        molarFlow
        components  Class_2     % array of instancies of Class_2
    end
    methods
        function    this = Class_1( N )
            this.components(1:N) = Class_2();
        end
        function    value = boilingPoint( this, T )
            % Evaluate the saturationPressure method of the given components
            value = [];
            for obj = this.components
                % obj.#{components}#.saturationPressure.(obj.components{i},T)
                value(end+1) = obj.saturationPressure( T ); %#ok<AGROW>
            end
        end
    end
end

and

classdef    Class_2 
    properties
    end
    methods
        function    val = saturationPressure( this, T )
            val = randi( 1e5, 1 );
        end
    end
end

Answer 2

[Ivan Lizat]

I got it, the solution was, as you proposed, to use object arrays.

Thank you !