F# Structures

by Online Tutorials Library July 14, 2022

F# Structures

F# structure is a data structure which is used to organize data. It is value type and efficient than class. It does not allow let binding. You must declare fields by using val keyword. It allows defining fields but does not allow initialization. You can create constructors, mutable and immutable fields in structure.

Syntax:

 [ attributes ] type [accessibility-modifier] type-name =     struct         type-definition-elements     end // or [ attributes ] [] type [accessibility-modifier] type-name =     type-definition-elements 

F# Structure Example

Here, we have created a Book structure which contains book’s details.

 type Book = struct    val title : string    val author: string    val price : float    new (title, author, price) =           // Constructor       {title = title; author = author; price = price;} end let book = new Book(“FSharp Programming”, “Chris Smith”, 100.0)   // Calling custructor printfn “————————-Book’s Details————————-” printfn “Title  : %s ” book.title printfn “Author : %s”  book.author printfn “Price  : $%0.2f”  book.price    

Output:

-------------------------Book's Details------------------------- Title  : FSharp Programming Author : Chris Smith Price  : $100.00

Next TopicF# Discriminated Unions

F# Structures

F# Structures

F# Structure Example

Install Express.js

Data Organization in Firebase Real time Database

You may also like