config.json

{
  "language": "F#",
  "slug": "fsharp",
  "active": true,
  "status": {
    "concept_exercises": true,
    "test_runner": true,
    "representer": true,
    "analyzer": false
  },
  "blurb": "F# is a strongly-typed, functional language that is part of Microsoft's .NET language stack. Although F# is great for data science problems, it can elegantly handle almost every problem you throw at it.",
  "version": 3,
  "online_editor": {
    "indent_style": "space",
    "indent_size": 4,
    "highlightjs_language": "fsharp"
  },
  "test_runner": {
    "average_run_time": 8
  },
  "files": {
    "solution": ["%{pascal_slug}.fs"],
    "test": ["%{pascal_slug}Tests.fs"],
    "example": [".meta/Example.fs"],
    "exemplar": [".meta/Exemplar.fs"],
    "invalidator": ["%{pascal_slug}.fsproj"]
  },
  "exercises": {
    "concept": [
      {
        "slug": "bird-watcher",
        "name": "Bird Watcher",
        "uuid": "280e8400-1a46-4ef5-b48d-b24611aaace2",
        "concepts": ["arrays"],
        "prerequisites": ["booleans", "pattern-matching"]
      },
      {
        "slug": "lucians-luscious-lasagna",
        "name": "Lucian's Luscious Lasagna",
        "uuid": "b439e87d-6acf-40bd-848f-fb7c77dad229",
        "concepts": ["basics"],
        "prerequisites": []
      },
      {
        "slug": "annalyns-infiltration",
        "name": "Annalyn's Infiltration",
        "uuid": "6ef2a45b-1994-4fb8-b064-637e37881848",
        "concepts": ["booleans"],
        "prerequisites": ["basics"]
      },
      {
        "slug": "booking-up-for-beauty",
        "name": "Booking up for Beauty",
        "uuid": "04379e4b-05b0-40cd-992f-705b2494d645",
        "concepts": ["datetimes"],
        "prerequisites": ["numbers", "strings"]
      },
      {
        "slug": "valentines-day",
        "name": "Valentine's Day",
        "uuid": "d5305eb9-f87f-44db-a4a4-9e0b5069afe0",
        "concepts": ["discriminated-unions"],
        "prerequisites": ["basics"]
      },
      {
        "slug": "interest-is-interesting",
        "name": "Interest is Interesting",
        "uuid": "fd82bfe4-8725-486b-bc46-1639a83ae158",
        "concepts": ["floating-point-numbers"],
        "prerequisites": ["if-then-else-expressions", "numbers"]
      },
      {
        "slug": "tracks-on-tracks-on-tracks",
        "name": "Tracks on Tracks on Tracks",
        "uuid": "51f626a6-8e84-4dba-9c9f-b7830000fbe8",
        "concepts": ["lists"],
        "prerequisites": ["booleans", "strings", "pattern-matching"]
      },
      {
        "slug": "cars-assemble",
        "name": "Cars, Assemble!",
        "uuid": "85c32aba-5dc0-4dba-9226-63939f3db882",
        "concepts": ["if-then-else-expressions", "numbers"],
        "prerequisites": ["booleans"]
      },
      {
        "slug": "guessing-game",
        "name": "Guessing game",
        "uuid": "d605385d-fd8a-45fa-a320-4d7c40213769",
        "concepts": ["pattern-matching"],
        "prerequisites": ["if-then-else-expressions", "strings"]
      },
      {
        "slug": "bandwagoner",
        "name": "Bandwagoner",
        "uuid": "08ae8519-9dc9-47fe-82ad-8081fe642fe2",
        "concepts": ["records"],
        "prerequisites": ["booleans", "numbers", "pattern-matching", "strings"]
      },
      {
        "slug": "pizza-pricing",
        "name": "Pizza Pricing",
        "uuid": "33a9ea6f-b8c8-4b8e-85c2-45fec1684ea6",
        "concepts": ["recursion"],
        "prerequisites": ["discriminated-unions", "pattern-matching"]
      },
      {
        "slug": "log-levels",
        "name": "Log Levels",
        "uuid": "ab0e683f-46e8-4679-99d2-def4c337e4b8",
        "concepts": ["strings"],
        "prerequisites": ["basics"]
      },
      {
        "slug": "tisbury-treasure-hunt",
        "name": "Tisbury Treasure Hunt",
        "uuid": "2d397532-9c6c-473d-8af7-d14333e92a60",
        "concepts": ["tuples"],
        "prerequisites": ["pattern-matching", "strings"]
      }
    ],
    "practice": [
      {
        "slug": "hello-world",
        "name": "Hello World",
        "uuid": "302312cc-bd15-4ba0-8f2f-cbf411c40186",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1
      },
      {
        "slug": "two-fer",
        "name": "Two Fer",
        "uuid": "2ee3cc7a-db3f-4668-9983-ed6d0fea95d1",
        "practices": ["string-formatting", "strings"],
        "prerequisites": ["options", "strings"],
        "difficulty": 1
      },
      {
        "slug": "leap",
        "name": "Leap",
        "uuid": "66d974b5-18fc-4993-b5f2-7beda4f4afa3",
        "practices": ["numbers"],
        "prerequisites": ["if-then-else-expressions", "numbers"],
        "difficulty": 1
      },
      {
        "slug": "queen-attack",
        "name": "Queen Attack",
        "uuid": "528a0023-8687-4524-8318-516d1e432d0d",
        "practices": [],
        "prerequisites": ["if-then-else-expressions", "numbers", "tuples"],
        "difficulty": 3
      },
      {
        "slug": "raindrops",
        "name": "Raindrops",
        "uuid": "0c953a84-e726-4b9f-a964-1950ac2f95f2",
        "practices": [],
        "prerequisites": ["if-then-else-expressions", "numbers", "strings"],
        "difficulty": 2
      },
      {
        "slug": "accumulate",
        "name": "Accumulate",
        "uuid": "e7085050-1611-4773-9032-0e0ffb56c20e",
        "practices": [
          "generic-functions",
          "higher-order-functions",
          "recursion"
        ],
        "prerequisites": [
          "generic-functions",
          "higher-order-functions",
          "lists",
          "recursion"
        ],
        "difficulty": 2
      },
      {
        "slug": "space-age",
        "name": "Space Age",
        "uuid": "277d05db-0ba0-4de6-b5f8-090c251afffc",
        "practices": ["discriminated-unions", "floating-point-numbers"],
        "prerequisites": [
          "discriminated-unions",
          "floating-point-numbers",
          "integral-numbers"
        ],
        "difficulty": 1
      },
      {
        "slug": "grade-school",
        "name": "Grade School",
        "uuid": "cf058dc8-db6f-4034-ac5b-22f1d8d0decc",
        "practices": ["ordering"],
        "prerequisites": ["lists", "numbers", "ordering", "strings", "tuples"],
        "difficulty": 2
      },
      {
        "slug": "clock",
        "name": "Clock",
        "uuid": "30c3a38e-1e44-4711-887e-fca301c26c1b",
        "practices": ["equality", "numbers"],
        "prerequisites": ["equality", "numbers"],
        "difficulty": 3
      },
      {
        "slug": "bob",
        "name": "Bob",
        "uuid": "b3c4d578-10c8-47bc-b0ae-149ed8da530a",
        "practices": ["strings"],
        "prerequisites": ["if-then-else-expressions", "strings"],
        "difficulty": 1
      },
      {
        "slug": "beer-song",
        "name": "Beer Song",
        "uuid": "0ea0d92f-5510-4ba9-b419-3f5ad029b74f",
        "practices": ["ranges", "string-formatting"],
        "prerequisites": [
          "lists",
          "numbers",
          "ranges",
          "string-formatting",
          "strings"
        ],
        "difficulty": 3
      },
      {
        "slug": "kindergarten-garden",
        "name": "Kindergarten Garden",
        "uuid": "cf64cddf-63e2-4c71-ac15-0af617f82856",
        "practices": ["discriminated-unions"],
        "prerequisites": ["chars", "discriminated-unions", "strings"],
        "difficulty": 3
      },
      {
        "slug": "robot-simulator",
        "name": "Robot Simulator",
        "uuid": "ecae4faa-c516-4a71-8d55-9c53403d8826",
        "practices": ["discriminated-unions", "strings"],
        "prerequisites": [
          "chars",
          "discriminated-unions",
          "records",
          "strings",
          "tuples"
        ],
        "difficulty": 3
      },
      {
        "slug": "allergies",
        "name": "Allergies",
        "uuid": "221dff26-0495-4d4b-9363-14a5d7263271",
        "practices": [
          "bit-manipulation",
          "discriminated-unions",
          "flag-discriminated-unions"
        ],
        "prerequisites": [
          "bit-manipulation",
          "booleans",
          "discriminated-unions",
          "numbers"
        ],
        "difficulty": 4
      },
      {
        "slug": "ocr-numbers",
        "name": "OCR Numbers",
        "uuid": "eca7e334-f549-4601-a515-9d1467d3d0ea",
        "practices": [],
        "prerequisites": [
          "chars",
          "for-loops",
          "if-then-else-expressions",
          "lists",
          "options",
          "strings"
        ],
        "difficulty": 5
      },
      {
        "slug": "pig-latin",
        "name": "Pig Latin",
        "uuid": "a002e3db-8e9c-4cbf-b00f-f2090bae5d5a",
        "practices": ["regular-expressions"],
        "prerequisites": ["strings"],
        "difficulty": 6
      },
      {
        "slug": "hamming",
        "name": "Hamming",
        "uuid": "1dadf8c0-b15c-413f-987e-187d043910f0",
        "practices": ["collection-processing"],
        "prerequisites": [
          "for-loops",
          "if-then-else-expressions",
          "numbers",
          "options",
          "strings"
        ],
        "difficulty": 2
      },
      {
        "slug": "pangram",
        "name": "Pangram",
        "uuid": "dc133087-0548-49b4-8f17-0c26cf53bcdf",
        "practices": ["sets", "strings"],
        "prerequisites": ["booleans", "chars", "strings"],
        "difficulty": 2
      },
      {
        "slug": "isogram",
        "name": "Isogram",
        "uuid": "61404a27-62c3-43dc-93b7-7e4547e0a0d9",
        "practices": ["sets", "strings"],
        "prerequisites": ["booleans", "chars", "strings"],
        "difficulty": 3
      },
      {
        "slug": "twelve-days",
        "name": "Twelve Days",
        "uuid": "89cd6eb1-9671-42bd-a619-59013fb721b0",
        "practices": ["ranges", "string-formatting"],
        "prerequisites": [
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          "lists",
          "numbers",
          "ranges",
          "string-formatting",
          "strings"
        ],
        "difficulty": 4
      },
      {
        "slug": "phone-number",
        "name": "Phone Number",
        "uuid": "929f98e4-a16c-464b-ac6c-59ca86dbd2b6",
        "practices": ["regular-expressions", "result"],
        "prerequisites": ["result", "strings"],
        "difficulty": 5
      },
      {
        "slug": "high-scores",
        "name": "High Scores",
        "uuid": "c67d7118-2388-4421-baa1-cc3e4f0e2867",
        "practices": ["collection-processing", "ordering"],
        "prerequisites": ["constructors", "lists", "numbers", "ordering"],
        "difficulty": 2
      },
      {
        "slug": "bank-account",
        "name": "Bank Account",
        "uuid": "cb629d30-0351-4023-bd51-423267164c24",
        "practices": ["concurrency", "floating-point-numbers", "members"],
        "prerequisites": [
          "classes",
          "floating-point-numbers",
          "lists",
          "members",
          "options"
        ],
        "difficulty": 5
      },
      {
        "slug": "binary-search-tree",
        "name": "Binary Search Tree",
        "uuid": "4e786e56-2658-445f-ac91-64dd9c38dbb3",
        "practices": ["constructors", "members"],
        "prerequisites": [
          "classes",
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          "members",
          "numbers",
          "options",
          "records"
        ],
        "difficulty": 5
      },
      {
        "slug": "pov",
        "name": "POV",
        "uuid": "a6082751-98ca-45dc-aeed-cdd19a8da0ca",
        "practices": ["equality", "generic-types", "recursion"],
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          "generic-types",
          "lists",
          "options",
          "records",
          "strings"
        ],
        "difficulty": 10
      },
      {
        "slug": "zipper",
        "name": "Zipper",
        "uuid": "5369eea9-00c8-4044-b272-1ce8d0590ecf",
        "practices": ["equality", "immutability", "recursion"],
        "prerequisites": ["equality", "numbers", "options", "records"],
        "difficulty": 10
      },
      {
        "slug": "darts",
        "name": "Darts",
        "uuid": "fb3b73e1-673b-4907-821c-f85a157f53c1",
        "practices": ["floating-point-numbers"],
        "prerequisites": ["floating-point-numbers", "if-then-else-expressions"],
        "difficulty": 2
      },
      {
        "slug": "grains",
        "name": "Grains",
        "uuid": "e3751098-5a15-4350-bf5d-507583de3386",
        "practices": ["integral-numbers", "math-operators", "result"],
        "prerequisites": [
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          "if-then-else-expressions",
          "integral-numbers",
          "math-operators",
          "result"
        ],
        "difficulty": 2
      },
      {
        "slug": "all-your-base",
        "name": "All Your Base",
        "uuid": "01e394ee-23d5-44e6-a37e-149ffaf5375e",
        "practices": ["math-operators", "while-loops"],
        "prerequisites": [
          "lists",
          "math-operators",
          "numbers",
          "options",
          "while-loops"
        ],
        "difficulty": 4
      },
      {
        "slug": "largest-series-product",
        "name": "Largest Series Product",
        "uuid": "b3643992-583b-4e7a-a970-94bc7ae6739a",
        "practices": ["integral-numbers", "math-operators"],
        "prerequisites": [
          "chars",
          "for-loops",
          "integral-numbers",
          "math-operators",
          "options",
          "strings"
        ],
        "difficulty": 4
      },
      {
        "slug": "complex-numbers",
        "name": "Complex Numbers",
        "uuid": "d993508d-b4d2-4f3f-a46d-35b753bf90a9",
        "practices": [
          "extension-methods",
          "immutability",
          "math-operators",
          "structs"
        ],
        "prerequisites": [
          "extension-methods",
          "immutability",
          "math-operators",
          "numbers",
          "records",
          "structs"
        ],
        "difficulty": 6
      },
      {
        "slug": "nth-prime",
        "name": "Nth Prime",
        "uuid": "220cbe7e-e781-4ab9-84ec-2b89a3c97670",
        "practices": ["lazy-evaluation", "yield"],
        "prerequisites": ["numbers", "options"],
        "difficulty": 6
      },
      {
        "slug": "rational-numbers",
        "name": "Rational Numbers",
        "uuid": "913ce020-32ae-4b65-ae64-c924d25295dc",
        "practices": [
          "extension-methods",
          "immutability",
          "math-operators",
          "operator-overloading",
          "structs"
        ],
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          "immutability",
          "math-operators",
          "numbers",
          "operator-overloading",
          "records",
          "structs"
        ],
        "difficulty": 6
      },
      {
        "slug": "diffie-hellman",
        "name": "Diffie-Hellman",
        "uuid": "2a7e3e78-ab94-40f3-8f16-1d5aa84c2f85",
        "practices": ["big-integers", "math-operators", "randomness"],
        "prerequisites": [
          "big-integers",
          "lists",
          "math-operators",
          "randomness"
        ],
        "difficulty": 7
      },
      {
        "slug": "custom-set",
        "name": "Custom Set",
        "uuid": "ecee74aa-41f5-42aa-b99e-31e9589378e3",
        "practices": ["constructors", "generic-types", "immutability", "sets"],
        "prerequisites": [
          "booleans",
          "constructors",
          "generic-types",
          "immutability",
          "lists",
          "numbers",
          "records",
          "sets"
        ],
        "difficulty": 5
      },
      {
        "slug": "run-length-encoding",
        "name": "Run-Length Encoding",
        "uuid": "0a10cd0b-ea37-4c78-a6a4-223203ac1c37",
        "practices": ["strings"],
        "prerequisites": [
          "booleans",
          "for-loops",
          "if-then-else-expressions",
          "strings"
        ],
        "difficulty": 5
      },
      {
        "slug": "palindrome-products",
        "name": "Palindrome Products",
        "uuid": "471c89f9-8b27-4898-8e98-58e4b2921616",
        "practices": ["exceptions", "generic-methods"],
        "prerequisites": [
          "exceptions",
          "generic-methods",
          "lists",
          "numbers",
          "options",
          "tuples"
        ],
        "difficulty": 6
      },
      {
        "slug": "word-search",
        "name": "Word Search",
        "uuid": "8f8a79d1-78ed-4cdd-adcc-5cd6c6781dcd",
        "practices": ["constructors", "nullability"],
        "prerequisites": [
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          "lists",
          "maps",
          "nullability",
          "options",
          "strings",
          "tuples"
        ],
        "difficulty": 6
      },
      {
        "slug": "dominoes",
        "name": "Dominoes",
        "uuid": "f09d34d3-f12c-4c9a-9083-68172478278e",
        "practices": ["lazy-evaluation"],
        "prerequisites": ["booleans", "lists", "numbers", "tuples"],
        "difficulty": 7
      },
      {
        "slug": "sieve",
        "name": "Sieve",
        "uuid": "a6511471-bc2c-4734-92fe-c6c5cf447efd",
        "practices": [],
        "prerequisites": ["numbers"],
        "difficulty": 3
      },
      {
        "slug": "strain",
        "name": "Strain",
        "uuid": "48ac8887-28db-4566-a415-c2d338dea104",
        "practices": [
          "arrays",
          "generic-methods",
          "higher-order-functions",
          "lazy-evaluation",
          "yield"
        ],
        "prerequisites": [
          "arrays",
          "generic-methods",
          "higher-order-functions",
          "lists",
          "numbers"
        ],
        "difficulty": 3
      },
      {
        "slug": "robot-name",
        "name": "Robot Name",
        "uuid": "3fbd466a-caf4-48ac-9a1e-796bc406ff1e",
        "practices": ["classes", "randomness"],
        "prerequisites": [
          "classes",
          "randomness",
          "records",
          "strings",
          "tuples"
        ],
        "difficulty": 4
      },
      {
        "slug": "food-chain",
        "name": "Food Chain",
        "uuid": "f4dee9ea-fcdf-4623-8ae1-13bdf995f2cb",
        "practices": ["string-formatting"],
        "prerequisites": [
          "for-loops",
          "if-then-else-expressions",
          "lists",
          "numbers",
          "string-formatting",
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        ],
        "difficulty": 5
      },
      {
        "slug": "grep",
        "name": "Grep",
        "uuid": "da48b422-1c23-4272-87a4-415620d4e857",
        "practices": [
          "flag-discriminated-unions",
          "switch-expressions",
          "switch-statements"
        ],
        "prerequisites": [
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          "if-then-else-expressions",
          "lists",
          "records",
          "string-formatting",
          "strings",
          "tuples"
        ],
        "difficulty": 5
      },
      {
        "slug": "ledger",
        "name": "Ledger",
        "uuid": "e860ad86-cd1f-474b-9e8e-d8a72ff4315c",
        "practices": ["globalization", "string-formatting"],
        "prerequisites": [
          "globalization",
          "lists",
          "records",
          "string-formatting",
          "strings",
          "tuples"
        ],
        "difficulty": 5
      },
      {
        "slug": "list-ops",
        "name": "List Ops",
        "uuid": "47602465-a92d-43a5-9e9a-8ef09ce2104d",
        "practices": [
          "generic-methods",
          "higher-order-functions",
          "parameters"
        ],
        "prerequisites": [
          "generic-methods",
          "higher-order-functions",
          "lists",
          "parameters"
        ],
        "difficulty": 4
      },
      {
        "slug": "pascals-triangle",
        "name": "Pascal's Triangle",
        "uuid": "fef76c19-db3c-442d-b2f5-b0dfae19ee43",
        "practices": ["yield"],
        "prerequisites": ["for-loops", "lists", "numbers"],
        "difficulty": 4
      },
      {
        "slug": "book-store",
        "name": "Book Store",
        "uuid": "3741977a-adff-47bb-a9c5-c2e444805bac",
        "practices": ["floating-point-numbers", "recursion"],
        "prerequisites": [
          "floating-point-numbers",
          "for-loops",
          "lists",
          "numbers"
        ],
        "difficulty": 5
      },
      {
        "slug": "roman-numerals",
        "name": "Roman Numerals",
        "uuid": "2e88193d-9f80-4d83-901b-bb5ac4b0804c",
        "practices": ["extension-methods", "numbers", "while-loops"],
        "prerequisites": [
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          "numbers",
          "strings",
          "while-loops"
        ],
        "difficulty": 5
      },
      {
        "slug": "change",
        "name": "Change",
        "uuid": "03a1c773-5c48-4f70-a2de-b742197fa9d2",
        "practices": ["collection-processing"],
        "prerequisites": ["lists", "numbers", "options"],
        "difficulty": 7
      },
      {
        "slug": "armstrong-numbers",
        "name": "Armstrong Numbers",
        "uuid": "e7f74f6c-16ea-40d8-94f7-7034bc6ee938",
        "practices": ["casting"],
        "prerequisites": ["booleans", "casting", "numbers"],
        "difficulty": 2
      },
      {
        "slug": "collatz-conjecture",
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        "slug": "atbash-cipher",
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        "slug": "diamond",
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        "slug": "say",
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        "slug": "two-bucket",
        "name": "Two Bucket",
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        "slug": "zebra-puzzle",
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        "slug": "secret-handshake",
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        "name": "Variable Length Quantity",
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        "slug": "alphametics",
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        "slug": "forth",
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        "slug": "rail-fence-cipher",
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        "slug": "hangman",
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        "slug": "lens-person",
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        "practices": ["collection-processing", "math-operators", "numbers"],
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        "slug": "reverse-string",
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      {
        "slug": "rna-transcription",
        "name": "RNA Transcription",
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      "name": "Strings"
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      "slug": "tuples",
      "name": "Tuples"
    }
  ],
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    {
      "icon": "expressive",
      "title": "Expressive",
      "content": "F# code is very expressive, requiring little code for great results"
    },
    {
      "icon": "fun",
      "title": "Fun",
      "content": "F#'s powerful type system is a joy to work with"
    },
    {
      "icon": "safe",
      "title": "Safe",
      "content": "F#'s type system helps catch errors at compile-time. No more null-reference exceptions!"
    },
    {
      "icon": "functional",
      "title": "Functional first",
      "content": "F# is primarily a functional language, but also has great object-oriented support"
    },
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      "icon": "interop",
      "title": "Interop",
      "content": "As a member of the .NET ecosystem, F# enjoys full, two-way compatibility with C# code/libraries"
    },
    {
      "icon": "tooling",
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      "content": "F# has excellent tooling, with linting and refactoring options built-in"
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  ],
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    "used_for/scripts",
    "used_for/web_development"
  ]
}