F# List

In F#, a list is a collection of elements that can hold a sequence of values. It is an immutable data structure, which means once a list is created, it cannot be modified. However, you can easily create a new list that contains the same elements with some modifications using list functions. In this tutorial, we will discuss the concept of lists, syntax, examples, output, explanation, use, important points, and summary.

Syntax

let myList = [ element1; element2; ... ; elementN ]

Example

let myList = [1; 2; 3; 4; 5]
printfn "%A" myList

Output

[1; 2; 3; 4; 5]

Explanation

In the above example, we have defined a list named myList, which contains five integer elements. The elements are separated by semicolons and enclosed in square brackets.

Use

List is a useful data structure and can be used for various purposes. Here are some examples:

• Storing a collection of data that needs to be accessed frequently
• Implementing algorithms such as search, sort, etc.
• Representing ordered collections of data
• Encoding and decoding data

Important Points

• Lists are immutable data structures, and once they are created, they cannot be modified.
• List functions return a new list instead of modifying the original one.
• F# lists can hold elements of any data type.
• Lists can be of any size, and the elements can be of different types.
• Lists are indexed starting from zero.

Summary

In summary, a list is an immutable collection of elements separated by semicolons and enclosed in square brackets. It is a useful data structure in F# and can be used for various purposes. Lists are indexed starting from zero and can hold elements of any data type. F# list functions return a new list instead of modifying the original one, and this makes them efficient and easy to work with.