The classical introductory exercise. Just say "Hello, World!".
"Hello, World!" is the traditional first program for beginning programming in a new language or environment.
The objectives are simple:
If everything goes well, you will be ready to fetch your first real exercise.
This is an exercise to introduce users to using Exercism http://en.wikipedia.org/wiki/%22Hello,_world!%22_program
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
// This file was auto-generated based on version 1.1.0 of the canonical data. module HelloWorldTest open FsUnit.Xunit open Xunit open HelloWorld [<Fact>] let ``Say Hi!`` () = hello |> should equal "Hello, World!"
module HelloWorld let hello name = match name with | Some x -> sprintf "Hello, %s!" x | None -> "Hello, World!" module HelloWorldTest = open NUnit.Framework [<Test>] let ``No name`` () = Assert.That(hello None, Is.EqualTo("Hello, World!")) [<Test>] let ``Sample name`` () = Assert.That(hello (Some "Alice"), Is.EqualTo("Hello, Alice!")) [<Test>] let ``Other sample name`` () = Assert.That(hello (Some "Bob"), Is.EqualTo("Hello, Bob!"))
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.