diff --git a/gleam/wine-cellar/.gitignore b/gleam/wine-cellar/.gitignore new file mode 100644 index 0000000..170cca9 --- /dev/null +++ b/gleam/wine-cellar/.gitignore @@ -0,0 +1,4 @@ +*.beam +*.ez +build +erl_crash.dump diff --git a/gleam/wine-cellar/HELP.md b/gleam/wine-cellar/HELP.md new file mode 100644 index 0000000..33000ef --- /dev/null +++ b/gleam/wine-cellar/HELP.md @@ -0,0 +1,32 @@ +# 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/wine_cellar.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. \ No newline at end of file diff --git a/gleam/wine-cellar/HINTS.md b/gleam/wine-cellar/HINTS.md new file mode 100644 index 0000000..c26960d --- /dev/null +++ b/gleam/wine-cellar/HINTS.md @@ -0,0 +1,17 @@ +# Hints + +## 1. Get all wines of a given color + +- Keyword arguments are specified by writing a name before the argument name, separated by a space. +- The [`list.filter`][list-filter] function can be used to select elements from a list that match a given predicate. + +## 2. Get all wines of a given color bottled in a given year + +- Keyword arguments are specified by writing a name before the argument name, separated by a space. +- The [`list.filter`][list-filter] function can be used to select elements from a list that match a given predicate. + +## 3. Get all wines of a given color bottled in a given country + +- This function can be implemented by calling `wines_from_country` and then `wines_of_color` on the output. + +[list-filter]: https://hexdocs.pm/gleam_stdlib/gleam/list.html#filter \ No newline at end of file diff --git a/gleam/wine-cellar/README.md b/gleam/wine-cellar/README.md new file mode 100644 index 0000000..4f47568 --- /dev/null +++ b/gleam/wine-cellar/README.md @@ -0,0 +1,121 @@ +# Wine Cellar + +Welcome to Wine Cellar 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 + +## Labelled Arguments + +Sometimes when a function takes many arguments it can be difficult to remember the order they should be given in. To aid readability Gleam allows arguments to be labelled with a name. + +To label an argument specify the label name before the argument name, separated by a space. + +```gleam +pub fn replace( + in string: String, + each target: String, + with replacement: String +) -> String { + // ... +} +``` + +When calling a function with labelled arguments the arguments can be given in any order. Each of these calls to `replace` are equivalent: + +```gleam +replace(in: "🍔🍔🍔" each: "🍔", with: "🍕") + +replace(each: "🍔", in: "🍔🍔🍔", with: "🍕") + +replace(with: "🍕", each: "🍔", in: "🍔🍔🍔") +``` + +Labels are always optional. Even if a function has labelled arguments they can still be called without labels. + +```gleam +replace("🍔🍔🍔", "🍔", "🍕") +``` + +## Instructions + +You are the manager of a fancy restaurant that has a sizable wine cellar. A lot of your customers are demanding wine enthusiasts. Finding the right bottle of wine for a particular customer is not an easy task. + +As a tech-savvy restaurant owner, you decided to speed up the wine selection process by writing an app that will let guests filter your wines by their preferences. + +## 1. Get all wines of a given color + +A bottle of wine is represented using a custom type, and wines are stored in a list. + +```gleam +[ + Wine("Chardonnay", 2015, "Italy", White), + Wine("Pinot grigio", 2017, "Germany", White), + Wine("Pinot noir", 2016, "France", Red), + Wine("Dornfelder", 2018, "Germany", Rose) +] +``` + +Implement the `wines_of_color` function. It should take a list of wines and return all wines of a given color. + +```gleam +wines_of_color( + [ + Wine("Chardonnay", 2015, "Italy", White), + Wine("Pinot grigio", 2017, "Germany", White), + Wine("Pinot noir", 2016, "France", Red), + Wine("Dornfelder", 2018, "Germany", Rose) + ], + color: White +) +// -> [ +// Wine("Chardonnay", 2015, "Italy", White), +// Wine("Pinot grigio", 2017, "Germany", White), +// ] +``` + +## 2. Get all wines bottles in a given country + +Implement the `wines_from_country` function. It should take a list of wines and return all wines from a given country. + +```gleam +wines_from_country( + [ + Wine("Chardonnay", 2015, "Italy", White), + Wine("Pinot grigio", 2017, "Germany", White), + Wine("Pinot noir", 2016, "France", Red), + Wine("Dornfelder", 2018, "Germany", Rose) + ], + country: "Germany" +) +// -> [ +// Wine("Dornfelder", 2018, "Germany", Rose) +// ] +``` + +## 3. Get all wines of a given color bottled in a given country + +Implement the `filter` function. It should take a list of wines, a color and a country and return all wines of the given color bottled in the given country. + +```gleam +filter( + [ + Wine("Chardonnay", 2015, "Italy", White), + Wine("Pinot grigio", 2017, "Germany", White), + Wine("Pinot noir", 2016, "France", Red), + Wine("Dornfelder", 2018, "Germany", Rose) + ], + color: White + country: "Italy" +) +// -> [ +// Wine("Chardonnay", 2015, "Italy", White), +// ] +``` + +## Source + +### Created by + +- @lpil \ No newline at end of file diff --git a/gleam/wine-cellar/gleam.toml b/gleam/wine-cellar/gleam.toml new file mode 100644 index 0000000..92bbd06 --- /dev/null +++ b/gleam/wine-cellar/gleam.toml @@ -0,0 +1,12 @@ +name = "wine_cellar" +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" diff --git a/gleam/wine-cellar/manifest.toml b/gleam/wine-cellar/manifest.toml new file mode 100644 index 0000000..072155d --- /dev/null +++ b/gleam/wine-cellar/manifest.toml @@ -0,0 +1,27 @@ +# 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" } diff --git a/gleam/wine-cellar/src/wine_cellar.gleam b/gleam/wine-cellar/src/wine_cellar.gleam new file mode 100644 index 0000000..458eab0 --- /dev/null +++ b/gleam/wine-cellar/src/wine_cellar.gleam @@ -0,0 +1,29 @@ +import gleam/list + +pub fn wines_of_color(wines: List(Wine), color: Color) -> List(Wine) { + list.filter(wines, keeping: fn(wine) { wine.color == color }) +} + +pub fn wines_from_country(wines: List(Wine), country: String) -> List(Wine) { + list.filter(wines, keeping: fn(wine) { wine.country == country }) +} + +pub fn filter( + wines: List(Wine), + color color: Color, + country country: String, +) -> List(Wine) { + wines + |> wines_of_color(color) + |> wines_from_country(country) +} + +pub type Wine { + Wine(name: String, year: Int, country: String, color: Color) +} + +pub type Color { + Red + Rose + White +} diff --git a/gleam/wine-cellar/test/wine_cellar_test.gleam b/gleam/wine-cellar/test/wine_cellar_test.gleam new file mode 100644 index 0000000..2538762 --- /dev/null +++ b/gleam/wine-cellar/test/wine_cellar_test.gleam @@ -0,0 +1,89 @@ +import exercism/should +import exercism/test_runner +import wine_cellar.{Red, Rose, White, Wine} + +const cellar = [ + Wine("Chardonnay", 2015, "Italy", White), + Wine("Chardonnay", 2014, "France", White), + Wine("Dornfelder", 2018, "Germany", Rose), + Wine("Merlot", 2015, "France", Red), + Wine("Riesling", 2017, "Germany", White), + Wine("Pinot grigio", 2015, "Germany", White), + Wine("Pinot noir", 2016, "France", Red), + Wine("Pinot noir", 2013, "Italy", Red), +] + +pub fn main() { + test_runner.main() +} + +pub fn wines_of_color_white_test() { + cellar + |> wine_cellar.wines_of_color(White) + |> should.equal([ + Wine("Chardonnay", 2015, "Italy", White), + Wine("Chardonnay", 2014, "France", White), + Wine("Riesling", 2017, "Germany", White), + Wine("Pinot grigio", 2015, "Germany", White), + ]) +} + +pub fn wines_of_color_red_test() { + cellar + |> wine_cellar.wines_of_color(Red) + |> should.equal([ + Wine("Merlot", 2015, "France", Red), + Wine("Pinot noir", 2016, "France", Red), + Wine("Pinot noir", 2013, "Italy", Red), + ]) +} + +pub fn wines_of_color_rose_test() { + cellar + |> wine_cellar.wines_of_color(Rose) + |> should.equal([Wine("Dornfelder", 2018, "Germany", Rose)]) +} + +pub fn wines_from_country_france_test() { + cellar + |> wine_cellar.wines_from_country("France") + |> should.equal([ + Wine("Chardonnay", 2014, "France", White), + Wine("Merlot", 2015, "France", Red), + Wine("Pinot noir", 2016, "France", Red), + ]) +} + +pub fn wines_from_country_germany_test() { + cellar + |> wine_cellar.wines_from_country("Germany") + |> should.equal([ + Wine("Dornfelder", 2018, "Germany", Rose), + Wine("Riesling", 2017, "Germany", White), + Wine("Pinot grigio", 2015, "Germany", White), + ]) +} + +pub fn wines_from_country_scotland_test() { + cellar + |> wine_cellar.wines_from_country("Scotland") + |> should.equal([]) +} + +pub fn filter_white_germany_test() { + cellar + |> wine_cellar.filter(color: White, country: "Germany") + |> should.equal([ + Wine("Riesling", 2017, "Germany", White), + Wine("Pinot grigio", 2015, "Germany", White), + ]) +} + +pub fn filter_red_france_test() { + cellar + |> wine_cellar.filter(country: "France", color: Red) + |> should.equal([ + Wine("Merlot", 2015, "France", Red), + Wine("Pinot noir", 2016, "France", Red), + ]) +}