[gleam] complete high-school-sweetheart

gleam/high-school-sweetheart/.gitignore

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

gleam/high-school-sweetheart/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/high_school_sweetheart.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/high-school-sweetheart/HINTS.md

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+# Hints
+
+## General
+
+- Browse the [functions available in the _string module_][string-module-functions] to discover which operations on strings Gleam's standard library offers.
+
+## 1. Get the name's first letter
+
+- There is a [function][string-first] to get the first character from a string.
+- There are multiple [functions][string-trim] to remove leading, trailing, or leading and trailing whitespaces from a string.
+
+## 2. Format the first letter as an initial
+
+- There is a [function][string-upcase] to convert all characters in a string to their uppercase variant.
+- The `<>` operator can be used to concatenate strings.
+
+## 3. Split the full name into the first name and the last name
+
+- There is a [function][string-split] that splits a string on whitespace characters.
+- A few first elements of a list can be assigned to variables by pattern matching on the list.
+
+## 4. Put the initials inside of the heart
+
+- The `<>` operator can be used to concatenate strings.
+
+[string-module-functions]: https://hexdocs.pm/gleam_stdlib/gleam/string.html
+[string-first]: https://hexdocs.pm/gleam_stdlib/gleam/string.html#first
+[string-trim]: https://hexdocs.pm/gleam_stdlib/gleam/string.html#trim
+[string-upcase]: https://hexdocs.pm/gleam_stdlib/gleam/string.html#uppercase
+[string-split]: https://hexdocs.pm/gleam_stdlib/gleam/string.html#split

gleam/high-school-sweetheart/README.md

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+# High School Sweetheart
+
+Welcome to High School Sweetheart 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
+
+## Pipe Operator
+
+The `|>` operator is called the pipe operator. It can be used to chain function calls together in such a way that the value returned by the previous function call is passed to the next function call.
+
+```gleam
+"hello"
+|> string.uppercase
+|> string.append("?!")
+// -> "HELLO?!"
+```
+
+The above code is equivalent to the following:
+
+```gleam
+string.append(string.uppercase("hello"), "?!")
+```
+
+The pipe operator will either pass the value as the first argument to the function call, or the only argument to a new call, selecting whichever would have the correct type.
+
+```gleam
+100
+|> function_that_takes_two_arguments(1)
+
+// Is equivalent to
+function_that_takes_two_arguments(100, 1)
+```
+
+```gleam
+100
+|> function_that_returns_a_function(1)
+
+// Is equivalent to
+function_that_returns_a_function(1)(100)
+```
+
+Sometimes we want to pass the value into another position, in this case the `_` placeholder can be used to indicate where the value should be inserted.
+
+```gleam
+100
+|> some_function(1, _, 2)
+```
+
+## Instructions
+
+In this exercise, you are going to help high school sweethearts profess their love on social media by generating an ASCII heart with their initials:
+
+```
+     ******       ******
+   **      **   **      **
+ **         ** **         **
+**            *            **
+**                         **
+**     J. K.  +  M. B.     **
+ **                       **
+   **                   **
+     **               **
+       **           **
+         **       **
+           **   **
+             ***
+              *
+```
+
+## 1. Get the name's first letter
+
+Implement the `first_letter` function. It should take a name and return its first letter. It should clean up any unnecessary whitespace from the name.
+
+```gleam
+first_letter("Jane")
+// -> "J"
+```
+
+## 2. Format the first letter as an initial
+
+Implement the `initial` function. It should take a name and return its first letter, uppercase, followed by a dot. Make sure to reuse `first_letter` that you defined in the previous step.
+
+```gleam
+initial("Robert")
+// -> "R."
+```
+
+## 3. Split the full name into the first name and the last name
+
+Implement the `initials` function. It should take a full name, consisting of a first name and a last name separated by a space, and return the initials. Make sure to reuse `initial` that you defined in the previous step.
+
+```gleam
+initials("Lance Green")
+// -> "L. G."
+```
+
+## 4. Put the initials inside of the heart
+
+Implement the `pair` function. It should take two full names and return the initials inside an ASCII heart. Make sure to reuse `initials` that you defined in the previous step.
+
+```gleam
+pair("Blake Miller", "Riley Lewis")
+// -> "
+//      ******       ******
+//    **      **   **      **
+//  **         ** **         **
+// **            *            **
+// **                         **
+// **     B. M.  +  R. L.     **
+//  **                       **
+//    **                   **
+//      **               **
+//        **           **
+//          **       **
+//            **   **
+//              ***
+//               *
+// "
+```
+
+## Source
+
+### Created by
+
+- @lpil

gleam/high-school-sweetheart/gleam.toml

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+name = "high_school_sweetheart"
+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"
+gleam_erlang = ">= 0.25.0 and < 1.0.0"
+
+[dev-dependencies]
+exercism_test_runner = "~> 1.4"

gleam/high-school-sweetheart/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 = "0.25.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "054D571A7092D2A9727B3E5D183B7507DAB0DA41556EC9133606F09C15497373" },
+  { 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_erlang = { version = ">= 0.25.0 and < 1.0.0"}
+gleam_otp = { version = "~> 0.7 or ~> 1.0" }
+gleam_stdlib = { version = "~> 0.32 or ~> 1.0" }
+simplifile = { version = "~> 1.0" }

gleam/high-school-sweetheart/src/high_school_sweetheart.gleam

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+import gleam/list
+import gleam/result
+import gleam/string
+
+pub fn first_letter(name: String) {
+  name
+  |> string.trim
+  |> string.first
+  |> result.unwrap("?")
+}
+
+pub fn initial(name: String) {
+  name
+  |> first_letter
+  |> string.uppercase
+  |> string.append(".")
+}
+
+pub fn initials(full_name: String) {
+  full_name
+  |> string.split(" ")
+  |> list.map(initial)
+  |> string.join(" ")
+}
+
+pub fn pair(full_name1: String, full_name2: String) {
+  "
+     ******       ******
+   **      **   **      **
+ **         ** **         **
+**            *            **
+**                         **
+**     " <> initials(full_name1) <> "  +  " <> initials(full_name2) <> "     **
+ **                       **
+   **                   **
+     **               **
+       **           **
+         **       **
+           **   **
+             ***
+              *
+"
+}

gleam/high-school-sweetheart/test/high_school_sweetheart_test.gleam

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+import exercism/should
+import exercism/test_runner
+import high_school_sweetheart
+
+pub fn main() {
+  test_runner.main()
+}
+
+pub fn first_letter_test() {
+  high_school_sweetheart.first_letter("Mary")
+  |> should.equal("M")
+}
+
+pub fn first_letter_does_not_change_case_test() {
+  high_school_sweetheart.first_letter("john")
+  |> should.equal("j")
+}
+
+pub fn first_letter_removes_whitespace_test() {
+  high_school_sweetheart.first_letter("\n\t   Sarah   ")
+  |> should.equal("S")
+}
+
+pub fn initial_test() {
+  high_school_sweetheart.initial("Betty")
+  |> should.equal("B.")
+}
+
+pub fn initial_uppercases_letter_test() {
+  high_school_sweetheart.initial("james")
+  |> should.equal("J.")
+}
+
+pub fn initials_test() {
+  high_school_sweetheart.initials("Linda Miller")
+  |> should.equal("L. M.")
+}
+
+pub fn pair_test() {
+  high_school_sweetheart.pair("Avery Bryant", "Charlie Dixon")
+  |> should.equal(
+    "
+     ******       ******
+   **      **   **      **
+ **         ** **         **
+**            *            **
+**                         **
+**     A. B.  +  C. D.     **
+ **                       **
+   **                   **
+     **               **
+       **           **
+         **       **
+           **   **
+             ***
+              *
+",
+  )
+}