Add 'allergies' exercise

config.json

@@ -428,6 +428,14 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 6
+      },
+      {
+        "slug": "allergies",
+        "name": "Allergies",
+        "uuid": "9900a26d-52dd-404a-a7f0-d1d260c4f279",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 4
       }
     ]
   },

exercises/practice/allergies/.docs/instructions.md

@@ -0,0 +1,27 @@
+# Instructions
+
+Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.
+
+An allergy test produces a single numeric score which contains the information about all the allergies the person has (that they were tested for).
+
+The list of items (and their value) that were tested are:
+
+- eggs (1)
+- peanuts (2)
+- shellfish (4)
+- strawberries (8)
+- tomatoes (16)
+- chocolate (32)
+- pollen (64)
+- cats (128)
+
+So if Tom is allergic to peanuts and chocolate, he gets a score of 34.
+
+Now, given just that score of 34, your program should be able to say:
+
+- Whether Tom is allergic to any one of those allergens listed above.
+- All the allergens Tom is allergic to.
+
+Note: a given score may include allergens **not** listed above (i.e. allergens that score 256, 512, 1024, etc.).
+Your program should ignore those components of the score.
+For example, if the allergy score is 257, your program should only report the eggs (1) allergy.

exercises/practice/allergies/.meta/config.json

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "erikschierboom"
+  ],
+  "files": {
+    "solution": [
+      "allergies.8th"
+    ],
+    "test": [
+      "test.8th"
+    ],
+    "example": [
+      ".meta/example.8th"
+    ]
+  },
+  "blurb": "Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.",
+  "source": "Exercise by the JumpstartLab team for students at The Turing School of Software and Design.",
+  "source_url": "https://turing.edu"
+}

exercises/practice/allergies/.meta/example.8th

@@ -0,0 +1,9 @@
+["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"] constant allergens
+
+: allergic-to? \ n s -- T
+  allergens swap ' s:= a:indexof nip 1 swap n:shl n:band >bool
+;
+
+: list \ n -- a 
+  >r allergens ( r@ swap allergic-to? ) a:filter rdrop
+;

exercises/practice/allergies/.meta/tests.toml

@@ -0,0 +1,160 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[17fc7296-2440-4ac4-ad7b-d07c321bc5a0]
+description = "testing for eggs allergy -> not allergic to anything"
+
+[07ced27b-1da5-4c2e-8ae2-cb2791437546]
+description = "testing for eggs allergy -> allergic only to eggs"
+
+[5035b954-b6fa-4b9b-a487-dae69d8c5f96]
+description = "testing for eggs allergy -> allergic to eggs and something else"
+
+[64a6a83a-5723-4b5b-a896-663307403310]
+description = "testing for eggs allergy -> allergic to something, but not eggs"
+
+[90c8f484-456b-41c4-82ba-2d08d93231c6]
+description = "testing for eggs allergy -> allergic to everything"
+
+[d266a59a-fccc-413b-ac53-d57cb1f0db9d]
+description = "testing for peanuts allergy -> not allergic to anything"
+
+[ea210a98-860d-46b2-a5bf-50d8995b3f2a]
+description = "testing for peanuts allergy -> allergic only to peanuts"
+
+[eac69ae9-8d14-4291-ac4b-7fd2c73d3a5b]
+description = "testing for peanuts allergy -> allergic to peanuts and something else"
+
+[9152058c-ce39-4b16-9b1d-283ec6d25085]
+description = "testing for peanuts allergy -> allergic to something, but not peanuts"
+
+[d2d71fd8-63d5-40f9-a627-fbdaf88caeab]
+description = "testing for peanuts allergy -> allergic to everything"
+
+[b948b0a1-cbf7-4b28-a244-73ff56687c80]
+description = "testing for shellfish allergy -> not allergic to anything"
+
+[9ce9a6f3-53e9-4923-85e0-73019047c567]
+description = "testing for shellfish allergy -> allergic only to shellfish"
+
+[b272fca5-57ba-4b00-bd0c-43a737ab2131]
+description = "testing for shellfish allergy -> allergic to shellfish and something else"
+
+[21ef8e17-c227-494e-8e78-470a1c59c3d8]
+description = "testing for shellfish allergy -> allergic to something, but not shellfish"
+
+[cc789c19-2b5e-4c67-b146-625dc8cfa34e]
+description = "testing for shellfish allergy -> allergic to everything"
+
+[651bde0a-2a74-46c4-ab55-02a0906ca2f5]
+description = "testing for strawberries allergy -> not allergic to anything"
+
+[b649a750-9703-4f5f-b7f7-91da2c160ece]
+description = "testing for strawberries allergy -> allergic only to strawberries"
+
+[50f5f8f3-3bac-47e6-8dba-2d94470a4bc6]
+description = "testing for strawberries allergy -> allergic to strawberries and something else"
+
+[23dd6952-88c9-48d7-a7d5-5d0343deb18d]
+description = "testing for strawberries allergy -> allergic to something, but not strawberries"
+
+[74afaae2-13b6-43a2-837a-286cd42e7d7e]
+description = "testing for strawberries allergy -> allergic to everything"
+
+[c49a91ef-6252-415e-907e-a9d26ef61723]
+description = "testing for tomatoes allergy -> not allergic to anything"
+
+[b69c5131-b7d0-41ad-a32c-e1b2cc632df8]
+description = "testing for tomatoes allergy -> allergic only to tomatoes"
+
+[1ca50eb1-f042-4ccf-9050-341521b929ec]
+description = "testing for tomatoes allergy -> allergic to tomatoes and something else"
+
+[e9846baa-456b-4eff-8025-034b9f77bd8e]
+description = "testing for tomatoes allergy -> allergic to something, but not tomatoes"
+
+[b2414f01-f3ad-4965-8391-e65f54dad35f]
+description = "testing for tomatoes allergy -> allergic to everything"
+
+[978467ab-bda4-49f7-b004-1d011ead947c]
+description = "testing for chocolate allergy -> not allergic to anything"
+
+[59cf4e49-06ea-4139-a2c1-d7aad28f8cbc]
+description = "testing for chocolate allergy -> allergic only to chocolate"
+
+[b0a7c07b-2db7-4f73-a180-565e07040ef1]
+description = "testing for chocolate allergy -> allergic to chocolate and something else"
+
+[f5506893-f1ae-482a-b516-7532ba5ca9d2]
+description = "testing for chocolate allergy -> allergic to something, but not chocolate"
+
+[02debb3d-d7e2-4376-a26b-3c974b6595c6]
+description = "testing for chocolate allergy -> allergic to everything"
+
+[17f4a42b-c91e-41b8-8a76-4797886c2d96]
+description = "testing for pollen allergy -> not allergic to anything"
+
+[7696eba7-1837-4488-882a-14b7b4e3e399]
+description = "testing for pollen allergy -> allergic only to pollen"
+
+[9a49aec5-fa1f-405d-889e-4dfc420db2b6]
+description = "testing for pollen allergy -> allergic to pollen and something else"
+
+[3cb8e79f-d108-4712-b620-aa146b1954a9]
+description = "testing for pollen allergy -> allergic to something, but not pollen"
+
+[1dc3fe57-7c68-4043-9d51-5457128744b2]
+description = "testing for pollen allergy -> allergic to everything"
+
+[d3f523d6-3d50-419b-a222-d4dfd62ce314]
+description = "testing for cats allergy -> not allergic to anything"
+
+[eba541c3-c886-42d3-baef-c048cb7fcd8f]
+description = "testing for cats allergy -> allergic only to cats"
+
+[ba718376-26e0-40b7-bbbe-060287637ea5]
+description = "testing for cats allergy -> allergic to cats and something else"
+
+[3c6dbf4a-5277-436f-8b88-15a206f2d6c4]
+description = "testing for cats allergy -> allergic to something, but not cats"
+
+[1faabb05-2b98-4995-9046-d83e4a48a7c1]
+description = "testing for cats allergy -> allergic to everything"
+
+[f9c1b8e7-7dc5-4887-aa93-cebdcc29dd8f]
+description = "list when: -> no allergies"
+
+[9e1a4364-09a6-4d94-990f-541a94a4c1e8]
+description = "list when: -> just eggs"
+
+[8851c973-805e-4283-9e01-d0c0da0e4695]
+description = "list when: -> just peanuts"
+
+[2c8943cb-005e-435f-ae11-3e8fb558ea98]
+description = "list when: -> just strawberries"
+
+[6fa95d26-044c-48a9-8a7b-9ee46ec32c5c]
+description = "list when: -> eggs and peanuts"
+
+[19890e22-f63f-4c5c-a9fb-fb6eacddfe8e]
+description = "list when: -> more than eggs but not peanuts"
+
+[4b68f470-067c-44e4-889f-c9fe28917d2f]
+description = "list when: -> lots of stuff"
+
+[0881b7c5-9efa-4530-91bd-68370d054bc7]
+description = "list when: -> everything"
+
+[12ce86de-b347-42a0-ab7c-2e0570f0c65b]
+description = "list when: -> no allergen score parts"
+
+[93c2df3e-4f55-4fed-8116-7513092819cd]
+description = "list when: -> no allergen score parts without highest valid score"

exercises/practice/allergies/allergies.8th

@@ -0,0 +1,7 @@
+: allergic-to? \ n s -- T
+
+;
+
+: list \ n -- a 
+
+;