🎉 Exercism Research is now launched. Help Exercism, help science and have some fun at research.exercism.io 🎉
Avatar of epequeno

epequeno's solution

to Acronym in the Elm Track

Published at Apr 19 2021 · 0 comments
Test suite

Convert a phrase to its acronym.

Techies love their TLA (Three Letter Acronyms)!

Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).

Elm Installation

Refer to the Installing Elm page for information about installing elm.

Writing the Code

The code you have to write is located inside the src/ directory of the exercise. Elm automatically installs packages dependencies the first time you run the tests so we can start by running the tests from the exercise directory with:

$ elm-test

To automatically run tests again when you save changes:

$ elm-test --watch

As you work your way through the tests suite in the file tests/Tests.elm, be sure to remove the skip <| calls from each test until you get them all passing!


Julien Vanier https://github.com/monkbroc

Submitting Incomplete Solutions

It is possible to submit an incomplete solution so you can see how others have completed the exercise.


module Tests exposing (tests)

import Acronym exposing (abbreviate)
import Expect
import Test exposing (Test, describe, skip, test)

tests : Test
tests =
    describe "Acronym"
        [ test "basic" <|
            \_ ->
                Expect.equal "PNG"
                    (abbreviate "Portable Network Graphics")
        , skip <|
            test "lowercase words" <|
                \_ ->
                    Expect.equal "ROR"
                        (abbreviate "Ruby on Rails")
        , skip <|
            test "punctuation" <|
                \_ ->
                    Expect.equal "FIFO"
                        (abbreviate "First In, First Out")
        , skip <|
            test "all caps word" <|
                \_ ->
                    Expect.equal "GIMP"
                        (abbreviate "GNU Image Manipulation Program")
        , skip <|
            test "punctuation without whitespace" <|
                \_ ->
                    Expect.equal "CMOS"
                        (abbreviate "Complementary metal-oxide semiconductor")
module Acronym exposing (abbreviate)

abbreviate : String -> String
abbreviate phrase =
        |> String.replace "-" " "
        |> String.toUpper
        |> String.words
        |> List.map (String.left 1)
        |> String.join ""

Community comments

Find this solution interesting? Ask the author a question to learn more.

What can you learn from this solution?

A huge amount can be learned from reading other people’s code. This is why we wanted to give exercism users the option of making their solutions public.

Here are some questions to help you reflect on this solution and learn the most from it.

  • What compromises have been made?
  • Are there new concepts here that you could read more about to improve your understanding?