getting started with visual studio code for mac

Getting started with visual studio code for mac for mac#

It is in this function that we call the square function with an argument of 12. It follows the same convention as other C-style programming languages, where command-line arguments can be passed to this function, and an integer code is returned (typically 0). The F# compiler picked int at this point, but it will adjust the type signature if you call square with a different input type, such as a float.Īnother function, main, is defined, which is decorated with the EntryPoint attribute to tell the F# compiler that program execution should start there.

Note that the compiler gave square the int type for now - this is because multiplication is not generic across all types, but rather is generic across a closed set of types. It can be read like this: 'Square is a function which takes an integer named x and produces an integer'. This is what is known as the function's type signature. If you hover over square, you should see the following: val square: x:int -> int The F# compiler understands the types where multiplication is valid, and will assign a type to x based on how square is called. Because F# uses Type Inference, the type of x doesn't need to be specified. In the previous code sample, a function square has been defined which takes an input named x and multiplies it by itself. Printfn '%d squared is: %d!' 12 (square 12) Make sure that the Program.fs file is open, and then replace its contents with the following: module HelloSquare Let's get started by writing some code first. You should now see an F# project in the Solution Explorer. Notice, the preview pane to the side of the screen that will show the directory structure that will be created based on the options selected.Ĭlick Create. Give your project a name, and choose the options you want for the app. Under console app, change C# to F# if needed. Either template should work for the purpose of this article. In the New Project dialog, there are 2 different templates for Console Application.

Getting started with visual studio code for mac for mac#

One of the most basic projects in Visual Studio for Mac is the Console Application. Ensure that you have Visual Studio for Mac installed. F# is supported in the Visual Studio for Mac IDE.