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How can i create constant in a .m archive and use it for the creation of new objects?

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Vitto Torres 2020-12-3

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回答： Walter Roberson 2020-12-3

采纳的回答： Walter Roberson

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Hi, I have an archive named Constantes.m

%%  Logica
    TRUE=1;
    FALSE=0;
%%  Colores
    AZUL=[0 0 1];
    ROJO=[1 0 0];
    BLANCO=[1 1 1];
%%  Tablero
    COLUMNAS=8;
    FILAS=8;  
%%  Juego
    TURNO_IA=[1 0 0];
    TURNO_JUGADOR=[0 0 1];

And i want to use those variables into my class archives, for example

    classdef  Pieza
    properties 
        Color=BLANCO;
        Rey=FALSE;
        Direccion=0;
    end
    methods 
        function obj = Pieza(Color,ColorDeJugador)
            %Constructor de Pieza (Color, Color Elegido)
                obj.Color=Color;
                Rey=FALSE;
                if isequal(Color,ColorDeJugador)
                    Direccion=-1;
                elseif isequal(Color,BLANCO);
                    Direccion=0;
                else
                    Direccion=1;
                end
        end
        function obj = Coronar(obj)
             %Parametro del objeto Pieza Rey a 1(verdadero)
            obj.Rey=TRUE;
        end
    end
    end
    
    

how is it done?

Thanks

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采纳的回答

Walter Roberson 2020-12-3

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/676748-how-can-i-create-constant-in-a-m-archive-and-use-it-for-the-creation-of-new-objects#answer_564683

https://www.mathworks.com/help/matlab/matlab_oop/properties-with-constant-values.html and note https://www.mathworks.com/help/matlab/matlab_oop/properties-with-constant-values.html#bso_zpq-5

Alternatives: https://www.mathworks.com/matlabcentral/answers/98309-is-it-possible-to-create-constant-variables-in-matlab

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Rik 2020-12-3

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编辑：Rik 2020-12-3

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You could turn your script into a function. If you store all variables as fields of a struct you can use something like this to select a variable:

Color=getConstant('BLANCO');

In getConstant.m:

output=constants.(input);

This way you can even take advantage of persistent variables to generate the struct only once.

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