I have created two classes: a market and a good. I can add goods to market by buying them or I can remove them from my market by selling them. I have written a method buy
1. Every time I buy a good, it checks whether there is such a product in my market, and if yes, it adds the quantity to the existing quantity.
2. If the product does not exist, it adds it as a new object to my good array.
function buy(obj, item) exists=0; for i=1:length(obj.goods) if obj.goods(i).name==item.name obj.goods(i).quantity=obj.goods(i).quantity+item.quantity; exists=1; end end if exists==0 obj.goods(end+1)=item; end end
First time I call the method it adds the object to the array. Now I have only one object in the array.
Second time I get the following error
>> mymarket.buy(cheese)Error using == Matrix dimensions must agree.Error in market/buy (line 17) if obj.goods(i).name==item.name
Any help will be appreciated.
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