hello-world

This commit is contained in:
Danil Negrienko 2024-11-04 14:28:33 -05:00
parent 79f77f009a
commit 2cb2de4caf
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{
"authors": [
"k4rtik"
],
"contributors": [
"bitfield",
"ekingery",
"ferhatelmas",
"hilary",
"kytrinyx",
"leenipper",
"petertseng",
"robphoenix",
"SebastianKristof",
"sebito91",
"tleen"
],
"files": {
"solution": [
"hello_world.go"
],
"test": [
"hello_world_test.go"
],
"example": [
".meta/example.go"
],
"invalidator": [
"go.mod"
]
},
"blurb": "The classical introductory exercise. Just say \"Hello, World!\".",
"source": "This is an exercise to introduce users to using Exercism",
"source_url": "https://en.wikipedia.org/wiki/%22Hello,_world!%22_program"
}

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{"track":"go","exercise":"hello-world","id":"d4f5f27839e94f75a117c66838248852","url":"https://exercism.org/tracks/go/exercises/hello-world","handle":"negrienko","is_requester":true,"auto_approve":false}

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go/hello-world/HELP.md Normal file
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# Help
## Running the tests
To run the tests run the command `go test` from within the exercise directory.
If the test suite contains benchmarks, you can run these with the `--bench` and `--benchmem`
flags:
go test -v --bench . --benchmem
Keep in mind that each reviewer will run benchmarks on a different machine, with
different specs, so the results from these benchmark tests may vary.
## Submitting your solution
You can submit your solution using the `exercism submit hello_world.go` 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 [Go track's documentation](https://exercism.org/docs/tracks/go)
- The [Go track's programming category on the forum](https://forum.exercism.org/c/programming/go)
- [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:
- [How to Write Go Code](https://golang.org/doc/code.html)
- [Effective Go](https://golang.org/doc/effective_go.html)
- [Go Resources](http://golang.org/help)
- [StackOverflow](http://stackoverflow.com/questions/tagged/go)

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go/hello-world/README.md Normal file
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# Hello World
Welcome to Hello World on Exercism's Go 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!"][hello-world] is the traditional first program for beginning programming in a new language or environment.
The objectives are simple:
- Modify the provided code so that it produces 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.
[hello-world]: https://en.wikipedia.org/wiki/%22Hello,_world!%22_program
## Source
### Created by
- @k4rtik
### Contributed to by
- @bitfield
- @ekingery
- @ferhatelmas
- @hilary
- @kytrinyx
- @leenipper
- @petertseng
- @robphoenix
- @SebastianKristof
- @sebito91
- @tleen
### Based on
This is an exercise to introduce users to using Exercism - https://en.wikipedia.org/wiki/%22Hello,_world!%22_program

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go/hello-world/go.mod Normal file
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module greeting
go 1.18

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package greeting
// HelloWorld greets the world.
func HelloWorld() string {
return "Hello, World!"
}

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package greeting
import "testing"
// Define a function named HelloWorld that takes no arguments,
// and returns a string.
// In other words, define a function with the following signature:
// HelloWorld() string
func TestHelloWorld(t *testing.T) {
expected := "Hello, World!"
if observed := HelloWorld(); observed != expected {
t.Fatalf("HelloWorld() = %v, want %v", observed, expected)
}
}
// BenchmarkHelloWorld() is a benchmarking function. These functions follow the
// form `func BenchmarkXxx(*testing.B)` and can be used to test the performance
// of your implementation. They may not be present in every exercise, but when
// they are you can run them by including the `-bench` flag with the `go test`
// command, like so: `go test -v --bench . --benchmem`
//
// You will see output similar to the following:
//
// BenchmarkHelloWorld 2000000000 0.46 ns/op
//
// This means that the loop ran 2000000000 times at a speed of 0.46 ns per loop.
//
// While benchmarking can be useful to compare different iterations of the same
// exercise, keep in mind that others will run the same benchmarks on different
// machines, with different specs, so the results from these benchmark tests may
// vary.
func BenchmarkHelloWorld(b *testing.B) {
if testing.Short() {
b.Skip("skipping benchmark in short mode.")
}
for i := 0; i < b.N; i++ {
HelloWorld()
}
}