How do I make a list of objects that have specific properties?

Hello. I'm trying to make this program for a homebrewed D&D thing for fun but am having some difficulties. I feel like I am woefully under informed about classes and how to use them.

I've defined a class for Ingredients

classdef Ingredient

      properties
          Rarity;
          Location;
          Easy;
          Medium;
          Hard;
          VeryHard;
          Weight;
          Passive;
      end

      methods 
      end
  end

What I want to be able to do is (after creating all of my ingredients) search for all ingredients of a specific location(s).

I understand this is a relatively simple question. Is there something I have to do when I create my objects? I am going about this in a way that makes any sense?

Thanks.

Answer 1

[Image Analyst]

What about strcmp() in a simple for loop. Assuming you have your array of ingredient objects:

for k = 1 : length(allIngredients)
    if strcmp(allIngredients(k).Location, 'pantry')
        message = sprintf('The location of ingredient #%d is your pantry', k);
        uiwait(helpdlg(message));
    end
end

[William Kozicki]

Yep, that is pretty much what I was looking for. Thanks!

Answer 2

[per isakson]

An alternate approach

%%Create some data
loc = randi( [double('A'),double('D')], 1,8 );
loc_str = arrayfun( @char, loc, 'uni',false );
loc_num = num2cell(loc);
%
%%Create an array of objects
allIngredients(1,8) = Ingredient;           % preallocate an array of objects
[allIngredients.Location] = loc_str{:};     % assign some values
[allIngredients.Rarity]   = loc_num{:};
%
%%Search for all ingredients with location equal to 'A'.
isA = strcmp( {allIngredients.Location}, 'A' );
allIngredients(isA).Rarity