F# Arrays

An array is a collection of elements of a single data type that can be accessed by an index or a subscript. In F#, arrays are represented as a single-dimensional structure.

Syntax

The syntax for declaring an array in F# is as follows:

let <array_name> = [| <element1>; <element2>; <element3>; ...|]

Example

let numbers = [| 1; 2; 3; 4; 5 |]

Output

The above example declares an array named numbers containing five integers. The output of the array is:

val numbers : int [] = [|1; 2; 3; 4; 5|]

Explanation

An array is a fixed-size collection that stores values of the same type. In F#, the square brackets [ ] are used to define arrays. The vertical bar | is used to separate the individual elements within the array.

In the above example, an array numbers is created containing five integers.

Use

Arrays are used to store and manipulate a collection of data. They are useful when you have a group of similar items that need to be stored and accessed sequentially. Arrays can be used for a variety of tasks, such as sorting, searching, and processing data.

Important Points

• Arrays are a collection of values of the same type.
• Arrays in F# are declared using square brackets [ ].
• Arrays can be created using the pipe symbol | to separate the individual elements within the array.
• Arrays are zero-indexed in F#, which means that the first element has an index of 0.

Summary

In F#, arrays are a useful way to store and manipulate a collection of data. They provide an efficient way to access data sequentially. In this tutorial, we learned how to declare an array, provided examples for how to create an array, and identified some important points to keep in mind when working with arrays.