Matlab策略模式

策略模式的意图是定义一系列算法，把它们一个一个封装起来，并且使它们可以互相替换。通常每个策略算法不可抽象再分。本人仿照所给的例子，用matlab代码对其进行实现

strategy.m

classdef strategy < handle
    methods(abstract)
        dooperation(~,~,~);
    end
end

operationadd.m

classdef operationadd < strategy
    methods
        function res = dooperation(~,num1,num2)
            res = num1 + num2;
        end
    end
end

 operationmultiply.m

classdef operationmultiply < strategy
    methods
        function res = dooperation(~,num1,num2)
            res = num1 * num2;
        end
    end
end

context.m

classdef context < handle
    properties
        strategy
    end   
    methods
        function obj = context(strategy)
            obj.strategy = strategy;
        end        
        function res = executestrategy(obj,num1,num2)
            res = obj.strategy.dooperation(num1,num2);
        end
    end
end

测试代码：

context = context(operationadd());
disp("2 + 3 = " + context.executestrategy(2, 3));
 
context =context(operationmultiply());
disp("2 * 3 = " + context.executestrategy(2, 3));