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Exercism: Hello world

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Julio Biason 3 years ago
parent
commit
40b4d55cda
  1. 28
      haskell/hello-world/.exercism/config.json
  2. 1
      haskell/hello-world/.exercism/metadata.json
  3. 88
      haskell/hello-world/HELP.md
  4. 45
      haskell/hello-world/README.md
  5. 16
      haskell/hello-world/examples/success-standard/package.yaml
  6. 34
      haskell/hello-world/hello-world.cabal
  7. 21
      haskell/hello-world/package.yaml
  8. 4
      haskell/hello-world/src/HelloWorld.hs
  9. 1
      haskell/hello-world/stack.yaml
  10. 12
      haskell/hello-world/stack.yaml.lock
  11. 13
      haskell/hello-world/test/Tests.hs

28
haskell/hello-world/.exercism/config.json

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{
"blurb": "The classical introductory exercise. Just say \"Hello, World!\"",
"authors": [
"ErikSchierboom"
],
"contributors": [
"iHiD",
"kytrinyx",
"petertseng",
"ppartarr",
"rbasso",
"sshine",
"tejasbubane"
],
"files": {
"solution": [
"src/HelloWorld.hs"
],
"test": [
"test/Tests.hs"
],
"example": [
"examples/success-standard/src/HelloWorld.hs"
]
},
"source": "This is an exercise to introduce users to using Exercism",
"source_url": "http://en.wikipedia.org/wiki/%22Hello,_world!%22_program"
}

1
haskell/hello-world/.exercism/metadata.json

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{"track":"haskell","exercise":"hello-world","id":"dc1da3a0365842e698c8f3f230d2c553","url":"https://exercism.org/tracks/haskell/exercises/hello-world","handle":"JBiason","is_requester":true,"auto_approve":false}

88
haskell/hello-world/HELP.md

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# Help
## Running the tests
To run the test suite, execute the following command:
```bash
tacktack test
```
#### If you get an error message like this...
```
No .cabal file found in directory
```
or
```
RedownloadInvalidResponse Request {
...
}
"/home/username/.stack/build-plan/lts-xx.yy.yaml" (Response {responseStatus = Status {statusCode = 404, statusMessage = "Not Found"},
```
You are probably running an old stack version and need
to upgrade it. Try running:
```bash
stack upgrade
```
Or see other options for upgrading at [Stack documentation](https://docs.haskellstack.org/en/stable/install_and_upgrade/#upgrade).
#### Otherwise, if you get an error message like this...
```
No compiler found, expected minor version match with...
Try running "stack setup" to install the correct GHC...
```
Just do as it says and it will download and install
the correct compiler version:
```bash
stack setup
```
If you want to play with your solution in GHCi, just run the command:
```bash
stack ghci
```
## Submitting your solution
You can submit your solution using the `exercism submit src/HelloWorld.hs` 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 [Haskell track's documentation](https://exercism.org/docs/tracks/haskell)
- [Exercism's support channel on gitter](https://gitter.im/exercism/support)
- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
## Getting Started
Please refer to the [installation](https://exercism.io/tracks/haskell/installation)
and [learning](https://exercism.io/tracks/haskell/learning) help pages.
## Feedback, Issues, Pull Requests
The [exercism/haskell](https://github.com/exercism/haskell) repository on
GitHub is the home for all of the Haskell exercises.
If you have feedback about an exercise, or want to help implementing a new
one, head over there and create an issue. We'll do our best to help you!
{{ with .Spec.Credits }}

45
haskell/hello-world/README.md

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# Hello World
Welcome to Hello World on Exercism's Haskell Track.
If you need help running the tests or submitting your code, check out `HELP.md`.
## Instructions
The classical introductory exercise. Just say "Hello, World!".
["Hello, World!"](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program) is
the traditional first program for beginning programming in a new language
or environment.
The objectives are simple:
- Write a function that returns the string "Hello, World!".
- Run the test suite and make sure that it succeeds.
- Submit your solution and check it at the website.
If everything goes well, you will be ready to fetch your first real exercise.
To complete this exercise, you need to implement the `hello` function.
You will find the type signature for `hello` already in place,
but it is up to you to define the function.
## Source
### Created by
- @ErikSchierboom
### Contributed to by
- @iHiD
- @kytrinyx
- @petertseng
- @ppartarr
- @rbasso
- @sshine
- @tejasbubane
### Based on
This is an exercise to introduce users to using Exercism - http://en.wikipedia.org/wiki/%22Hello,_world!%22_program

16
haskell/hello-world/examples/success-standard/package.yaml

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name: hello-world
dependencies:
- base
library:
exposed-modules: HelloWorld
source-dirs: src
tests:
test:
main: Tests.hs
source-dirs: test
dependencies:
- hello-world
- hspec

34
haskell/hello-world/hello-world.cabal

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cabal-version: 1.12
-- This file has been generated from package.yaml by hpack version 0.34.2.
--
-- see: https://github.com/sol/hpack
name: hello-world
version: 1.1.0.5
build-type: Simple
library
exposed-modules:
HelloWorld
other-modules:
Paths_hello_world
hs-source-dirs:
src
ghc-options: -Wall
build-depends:
base
default-language: Haskell2010
test-suite test
type: exitcode-stdio-1.0
main-is: Tests.hs
other-modules:
Paths_hello_world
hs-source-dirs:
test
build-depends:
base
, hello-world
, hspec
default-language: Haskell2010

21
haskell/hello-world/package.yaml

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name: hello-world
version: 1.1.0.5
dependencies:
- base
library:
exposed-modules: HelloWorld
source-dirs: src
ghc-options: -Wall
# dependencies:
# - foo # List here the packages you
# - bar # want to use in your solution.
tests:
test:
main: Tests.hs
source-dirs: test
dependencies:
- hello-world
- hspec

4
haskell/hello-world/src/HelloWorld.hs

@ -0,0 +1,4 @@
module HelloWorld (hello) where
hello :: String
hello = "Hello, World!"

1
haskell/hello-world/stack.yaml

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resolver: lts-16.21

12
haskell/hello-world/stack.yaml.lock

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# This file was autogenerated by Stack.
# You should not edit this file by hand.
# For more information, please see the documentation at:
# https://docs.haskellstack.org/en/stable/lock_files
packages: []
snapshots:
- completed:
size: 532413
url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/16/21.yaml
sha256: 7b5cac89352fa4a88606dc6cb250aee9291f21e2e988d464065f5aa51f5de33d
original: lts-16.21

13
haskell/hello-world/test/Tests.hs

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import Test.Hspec (Spec, it, shouldBe)
import Test.Hspec.Runner (configFastFail, defaultConfig, hspecWith)
import HelloWorld (hello)
main :: IO ()
main = hspecWith defaultConfig {configFastFail = True} specs
specs :: Spec
specs = it "hello" $
hello `shouldBe` "Hello, World!"
-- 5c542864b011fb742aa95ca950d3473ce168ec8c
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