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high-school-sweetheart

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Alexander Heldt
2025-11-08 11:39:33 +01:00
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high-school-sweetheart/.exercism/config.json Normal file
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{
"authors": [
"lpil"
],
"files": {
"solution": [
"src/high_school_sweetheart.gleam"
],
"test": [
"test/high_school_sweetheart_test.gleam"
],
"exemplar": [
".meta/example.gleam"
],
"invalidator": [
"gleam.toml",
"manifest.toml"
]
},
"forked_from": [
"elixir/high-school-sweetheart"
],
"blurb": "Learn about the pipe operator by helping high school sweethearts profess their love on social media via ASCII art."
}

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high-school-sweetheart/.exercism/metadata.json Normal file
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{"track":"gleam","exercise":"high-school-sweetheart","id":"496bd682b8cc4070ab04077da46db44f","url":"https://exercism.org/tracks/gleam/exercises/high-school-sweetheart","handle":"fw353qwgs","is_requester":true,"auto_approve":false}

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high-school-sweetheart/.gitignore vendored Normal file
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*.beam
*.ez
build
erl_crash.dump

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high-school-sweetheart/HELP.md Normal file
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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.

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high-school-sweetheart/HINTS.md Normal file
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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

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high-school-sweetheart/README.md Normal file
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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

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high-school-sweetheart/gleam.toml Normal file
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name = "high_school_sweetheart"
version = "0.1.0"
[dependencies]
gleam_otp = "~> 0.7 or ~> 1.0"
gleam_stdlib = ">= 0.54.0 or ~> 1.0"
simplifile = "~> 1.0"
gleam_erlang = ">= 0.25.0 and < 1.0.0"
gleam_yielder = ">= 1.1.0 and < 2.0.0"
gleam_regexp = ">= 1.1.0 and < 2.0.0"
gleam_deque = ">= 1.0.0 and < 2.0.0"
[dev-dependencies]
exercism_test_runner = "~> 1.9"

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high-school-sweetheart/manifest.toml Normal file
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# This file was generated by Gleam
# You typically do not need to edit this file
packages = [
{ name = "argv", version = "1.0.2", build_tools = ["gleam"], requirements = [], otp_app = "argv", source = "hex", outer_checksum = "BA1FF0929525DEBA1CE67256E5ADF77A7CDDFE729E3E3F57A5BDCAA031DED09D" },
{ name = "exercism_test_runner", version = "1.9.0", 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 = "0B17BB25F2FF1E60266467C24FE0CA04005410306AA05E9A4B41B1852D72865C" },
{ name = "filepath", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "67A6D15FB39EEB69DD31F8C145BB5A421790581BD6AA14B33D64D5A55DBD6587" },
{ name = "gap", version = "1.1.3", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_stdlib"], otp_app = "gap", source = "hex", outer_checksum = "6EF5E3B523FDFBC317E9EA28D5163EE04744A97C007106F90207569789612291" },
{ name = "glance", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "glexer"], otp_app = "glance", source = "hex", outer_checksum = "E155BA1A787FD11827048355021C0390D2FE9A518485526F631A9D472858CC6D" },
{ name = "gleam_community_ansi", version = "1.4.3", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_regexp", "gleam_stdlib"], otp_app = "gleam_community_ansi", source = "hex", outer_checksum = "8A62AE9CC6EA65BEA630D95016D6C07E4F9973565FA3D0DE68DC4200D8E0DD27" },
{ name = "gleam_community_colour", version = "2.0.0", build_tools = ["gleam"], requirements = ["gleam_json", "gleam_stdlib"], otp_app = "gleam_community_colour", source = "hex", outer_checksum = "FDD6AC62C6EC8506C005949A4FCEF032038191D5EAAEC3C9A203CD53AE956ACA" },
{ name = "gleam_deque", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_deque", source = "hex", outer_checksum = "64D77068931338CF0D0CB5D37522C3E3CCA7CB7D6C5BACB41648B519CC0133C7" },
{ name = "gleam_erlang", version = "0.34.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "0C38F2A128BAA0CEF17C3000BD2097EB80634E239CE31A86400C4416A5D0FDCC" },
{ name = "gleam_json", version = "2.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_json", source = "hex", outer_checksum = "C55C5C2B318533A8072D221C5E06E5A75711C129E420DD1CE463342106012E5D" },
{ name = "gleam_otp", version = "0.16.1", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "50DA1539FC8E8FA09924EB36A67A2BBB0AD6B27BCDED5A7EF627057CF69D035E" },
{ name = "gleam_regexp", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_regexp", source = "hex", outer_checksum = "7F5E0C0BBEB3C58E57C9CB05FA9002F970C85AD4A63BA1E55CBCB35C15809179" },
{ name = "gleam_stdlib", version = "0.55.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "32D8F4AE03771516950047813A9E359249BD9FBA5C33463FDB7B953D6F8E896B" },
{ name = "gleam_yielder", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_yielder", source = "hex", outer_checksum = "8E4E4ECFA7982859F430C57F549200C7749823C106759F4A19A78AEA6687717A" },
{ name = "glexer", version = "2.2.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glexer", source = "hex", outer_checksum = "5C235CBDF4DA5203AD5EAB1D6D8B456ED8162C5424FE2309CFFB7EF438B7C269" },
{ name = "simplifile", version = "1.7.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "1D5DFA3A2F9319EC85825F6ED88B8E449F381B0D55A62F5E61424E748E7DDEB0" },
]
[requirements]
exercism_test_runner = { version = "~> 1.9" }
gleam_deque = { version = ">= 1.0.0 and < 2.0.0" }
gleam_erlang = { version = ">= 0.25.0 and < 1.0.0" }
gleam_otp = { version = "~> 0.7 or ~> 1.0" }
gleam_regexp = { version = ">= 1.1.0 and < 2.0.0" }
gleam_stdlib = { version = ">= 0.54.0 or ~> 1.0" }
gleam_yielder = { version = ">= 1.1.0 and < 2.0.0" }
simplifile = { version = "~> 1.0" }

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high-school-sweetheart/src/high_school_sweetheart.gleam Normal file
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import gleam/list
import gleam/string
pub fn first_letter(name: String) {
case string.first(string.trim(name)) {
Error(_) -> ""
Ok(first) -> first
}
}
pub fn initial(name: String) {
first_letter(name) |> string.uppercase <> "."
}
pub fn initials(full_name: String) {
case string.split(full_name, " ") {
[] -> ""
[first, last] -> initial(first) <> " " <> initial(last)
_ -> ""
}
}
pub fn pair(full_name1: String, full_name2: String) {
"
****** ******
** ** ** **
** ** ** **
** * **
** **
** " <> initials(full_name1) <> " + " <> initials(full_name2) <> " **
** **
** **
** **
** **
** **
** **
***
*
"
}

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high-school-sweetheart/test/high_school_sweetheart_test.gleam Normal file
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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. **
** **
** **
** **
** **
** **
** **
***
*
",
)
}