From aa42053c6eb8be85252f50b7d5ce9f239886d4a8 Mon Sep 17 00:00:00 2001
From: Andrew Miner <andrewminer@mac.com>
Date: Sun, 22 Feb 2015 23:19:12 -0800
Subject: [PATCH] Optimize perf. of crafting algo. (55% savings)

---
 src/scripts/models/mod_version.coffee |  2 +-
 src/scripts/models/recipe.coffee      | 11 +++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/scripts/models/mod_version.coffee b/src/scripts/models/mod_version.coffee
index 2e575824c..e4acb95eb 100644
--- a/src/scripts/models/mod_version.coffee
+++ b/src/scripts/models/mod_version.coffee
@@ -134,7 +134,7 @@ module.exports = class ModVersion extends BaseModel
     findRecipes: (itemSlug, result=[], options={})->
         options.onlyPrimary ?= false
 
-        for k, recipe of @_recipes
+        for recipe in _.values @_recipes
             if options.onlyPrimary
                 if recipe.itemSlug.matches itemSlug
                     result.push recipe
diff --git a/src/scripts/models/recipe.coffee b/src/scripts/models/recipe.coffee
index 919c1f279..b46a29b6b 100644
--- a/src/scripts/models/recipe.coffee
+++ b/src/scripts/models/recipe.coffee
@@ -100,11 +100,14 @@ module.exports = class Recipe extends BaseModel
         return 0
 
     produces: (itemSlug)->
-        for stack in @output
-            if stack.itemSlug.matches itemSlug
-                return true
+        if not @_produces?
+            @_produces = {}
 
-        return false
+            for stack in @output
+                @_produces[stack.itemSlug.qualified] = true
+                @_produces[stack.itemSlug.item] = true
+
+        return @_produces[itemSlug.qualified]
 
     requires: (itemSlug)->
         for stack in @input