[gleam] complete guessing-game

gleam/guessing-game/.gitignore

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+*.beam
+*.ez
+build
+erl_crash.dump

gleam/guessing-game/HELP.md

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+# Help
+
+## Running the tests
+
+To run the tests, run the command `gleam test` from within the exercise directory.
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit src/guessing_game.gleam` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Gleam track's documentation](https://exercism.org/docs/tracks/gleam)
+- The [Gleam track's programming category on the forum](https://forum.exercism.org/c/programming/gleam)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+- [gleam.run](https://gleam.run/documentation/) is the gleam official documentation.
+- [Discord](https://discord.gg/Fm8Pwmy) is the discord channel.
+- [StackOverflow](https://stackoverflow.com/questions/tagged/gleam) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

gleam/guessing-game/HINTS.md

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+# Hints
+
+## General
+
+- [This page][case-expressions] has a nice introduction to case expressions in Gleam.
+
+## 1. Reply to a correct guess
+
+- You can use a literal pattern to match on a specific number.
+
+## 2. Reply to a close guess
+
+- You can either use a literal pattern or a variable pattern and a guard.
+
+## 3. Reply to too low guesses
+
+- You can use a combination of a variable pattern and a guard.
+
+## 4. Reply to too high guesses
+
+- You can use a combination of a variable pattern and a guard, or a discard pattern.
+
+[case-expressions]: https://gleam.run/book/tour/case-expressions.html

gleam/guessing-game/README.md

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+# Guessing Game
+
+Welcome to Guessing Game on Exercism's Gleam Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+If you get stuck on the exercise, check out `HINTS.md`, but try and solve it without using those first :)
+
+## Introduction
+
+## Case Expressions
+
+In Gleam a `case` expression can be used to conditionally execute code. With a case expression a value can be tested against one or more _patterns_. An example of such a pattern is the _literal pattern_, which matches a value against a literal value (e.g. `1` or `"hello"`).
+
+Case expressions are written with the `case` keyword:
+
+```gleam
+pub fn describe(number: Int) -> String {
+  case number {
+    0 -> "Zero"
+    1 -> "One"
+  }
+}
+```
+
+While this may look like `switch` statements in other languages, pattern matching starts to shine when also using other patterns. One such pattern is the _variable pattern_, which allows one to assign a value to a variable. In this example, the variable `i` will be assigned the value of `number` if it is not `0`:
+
+```gleam
+pub fn describe(number: Int) -> String {
+  case number {
+    0 -> "Zero"
+    i -> "Non zero"
+  }
+}
+```
+
+In some cases, you may want to add an additional condition to a pattern. This is known as a _guard_ (clause), which can be added using the `if` keyword:
+
+```gleam
+pub fn describe(number: Int) -> String {
+  case number {
+    0 -> "Zero"
+    i if i < 0 -> "Negative number"
+  }
+}
+```
+
+For performance reasons only basic mathematical and boolean operators are allowed in guards, other functions cannot be used in guards.
+
+In the above example, not all possible input will have a matching pattern. The compiler will detect this and output an error. This is known as _exhaustive checking_. To solve the warning, one has to handle all cases. For this, the _discard pattern_ can be used, which is a pattern that matches on any value:
+
+```gleam
+pub fn describe(number: Int) -> String {
+  case number {
+    0 -> "Zero"
+    i if i < 0 -> "Negative number"
+    _ -> "Positive number"
+  }
+}
+
+// No compiler error
+```
+
+Case expressions will test a value against each pattern from top to bottom, until it finds a matching pattern and executes the logic associated with that pattern. The order of patterns matters!
+
+## Instructions
+
+In this exercise, you are playing a number guessing game with a friend. The rules are simple: you secretly choose a number between `1` and `100` and your friend tries to guess what number you've chosen. To help your friend, you respond differently depending on how close the guess was to the number you've chosen (`42`). These are the rules for the different replies:
+
+- If the guess is `42`: "Correct"
+- If the guess is `41` or `43`: "So close"
+- If the guess is less than `41`: "Too low"
+- If the guess is greater than `43`: "Too high"
+
+You have four tasks to encode the replies to the guesses.
+
+## 1. Reply to a correct guess
+
+Implement the `reply` function to reply to a correct guess:
+
+```gleam
+reply(42)
+// -> "Correct"
+```
+
+## 2. Reply to a close guess
+
+Modify the `reply` function to reply to close guesses:
+
+```gleam
+reply(41)
+// -> "So close"
+```
+
+## 3. Reply to too low guesses
+
+Modify the `reply` function to reply to too low guesses:
+
+```gleam
+reply(25)
+// -> "Too low"
+```
+
+## 4. Reply to too high guesses
+
+Modify the `reply` function to reply to too high guesses:
+
+```gleam
+reply(88)
+// -> "Too high"
+```
+
+## Source
+
+### Created by
+
+- @lpil

gleam/guessing-game/gleam.toml

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+name = "guessing_game"
+version = "0.1.0"
+
+[dependencies]
+gleam_bitwise = "~> 1.2"
+gleam_otp = "~> 0.7 or ~> 1.0"
+gleam_stdlib = "~> 0.32 or ~> 1.0"
+simplifile = "~> 1.0"
+
+[dev-dependencies]
+exercism_test_runner = "~> 1.4"

gleam/guessing-game/manifest.toml

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+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "argv", version = "1.0.1", build_tools = ["gleam"], requirements = [], otp_app = "argv", source = "hex", outer_checksum = "A6E9009E50BBE863EB37D963E4315398D41A3D87D0075480FC244125808F964A" },
+  { name = "exercism_test_runner", version = "1.7.0", build_tools = ["gleam"], requirements = ["argv", "gap", "glance", "gleam_community_ansi", "gleam_erlang", "gleam_json", "gleam_stdlib", "simplifile"], otp_app = "exercism_test_runner", source = "hex", outer_checksum = "2FC1BADB19BEC2AE77BFD2D3A606A014C85412A7B874CAFC4BA8CF04B0B257CD" },
+  { name = "gap", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_stdlib"], otp_app = "gap", source = "hex", outer_checksum = "2EE1B0A17E85CF73A0C1D29DA315A2699117A8F549C8E8D89FA8261BE41EDEB1" },
+  { name = "glance", version = "0.8.2", build_tools = ["gleam"], requirements = ["gleam_stdlib", "glexer"], otp_app = "glance", source = "hex", outer_checksum = "ACF09457E8B564AD7A0D823DAFDD326F58263C01ACB0D432A9BEFDEDD1DA8E73" },
+  { name = "gleam_bitwise", version = "1.3.1", build_tools = ["gleam"], requirements = [], otp_app = "gleam_bitwise", source = "hex", outer_checksum = "B36E1D3188D7F594C7FD4F43D0D2CE17561DE896202017548578B16FE1FE9EFC" },
+  { name = "gleam_community_ansi", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_stdlib"], otp_app = "gleam_community_ansi", source = "hex", outer_checksum = "FE79E08BF97009729259B6357EC058315B6FBB916FAD1C2FF9355115FEB0D3A4" },
+  { name = "gleam_community_colour", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_community_colour", source = "hex", outer_checksum = "A49A5E3AE8B637A5ACBA80ECB9B1AFE89FD3D5351FF6410A42B84F666D40D7D5" },
+  { name = "gleam_erlang", version = "0.24.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "26BDB52E61889F56A291CB34167315780EE4AA20961917314446542C90D1C1A0" },
+  { name = "gleam_json", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "8B197DD5D578EA6AC2C0D4BDC634C71A5BCA8E7DB5F47091C263ECB411A60DF3" },
+  { name = "gleam_otp", version = "0.10.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "0B04FE915ACECE539B317F9652CAADBBC0F000184D586AAAF2D94C100945D72B" },
+  { name = "gleam_stdlib", version = "0.36.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "C0D14D807FEC6F8A08A7C9EF8DFDE6AE5C10E40E21325B2B29365965D82EB3D4" },
+  { name = "glexer", version = "0.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glexer", source = "hex", outer_checksum = "4484942A465482A0A100936E1E5F12314DB4B5AC0D87575A7B9E9062090B96BE" },
+  { name = "simplifile", version = "1.5.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "EB9AA8E65E5C1E3E0FDCFC81BC363FD433CB122D7D062750FFDF24DE4AC40116" },
+  { name = "thoas", version = "0.4.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "4918D50026C073C4AB1388437132C77A6F6F7C8AC43C60C13758CC0ADCE2134E" },
+]
+
+[requirements]
+exercism_test_runner = { version = "~> 1.4" }
+gleam_bitwise = { version = "~> 1.2" }
+gleam_otp = { version = "~> 0.7 or ~> 1.0" }
+gleam_stdlib = { version = "~> 0.32 or ~> 1.0" }
+simplifile = { version = "~> 1.0" }

gleam/guessing-game/src/guessing_game.gleam

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+pub fn reply(guess: Int) -> String {
+  case guess {
+    _ if guess < 41 -> "Too low"
+    41 -> "So close"
+    42 -> "Correct"
+    43 -> "So close"
+    _ -> "Too high"
+  }
+}

gleam/guessing-game/test/guessing_game_test.gleam

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+import exercism/should
+import exercism/test_runner
+import guessing_game
+
+pub fn main() {
+  test_runner.main()
+}
+
+pub fn reply_42_test() {
+  guessing_game.reply(42)
+  |> should.equal("Correct")
+}
+
+pub fn reply_41_test() {
+  guessing_game.reply(41)
+  |> should.equal("So close")
+}
+
+pub fn reply_43_test() {
+  guessing_game.reply(43)
+  |> should.equal("So close")
+}
+
+pub fn reply_40_test() {
+  guessing_game.reply(40)
+  |> should.equal("Too low")
+}
+
+pub fn reply_1_test() {
+  guessing_game.reply(1)
+  |> should.equal("Too low")
+}
+
+pub fn reply_44_test() {
+  guessing_game.reply(44)
+  |> should.equal("Too high")
+}
+
+pub fn reply_100_test() {
+  guessing_game.reply(100)
+  |> should.equal("Too high")
+}