F# Constructor

by Online Tutorials Library July 14, 2022

F# Constructor

In F#, constructor is somewhat different than other .Net languages. There are always a primary constructor that may or may not have parameters. Scope of these parameters are throughout the class.

You can create a new additional constructor by using new keyword. Body of constructor must invoke the primary constructor specified at the top of the class declaration.

F# Constructor Example

 type Employee(name) =   class   do printf “%s” name  end let e = new Employee(“FSharp”) 

Output:

FSharp

F# Non-parameterized Constructor

 type Employee(id) =   class   new () =// This is non parameterized constructor    printf “This is non parametrized constructor”     Employee(12)       end  let e = new Employee() 

Output:

This is non parametrized constructor

F# Parameterized Constructor

 type Employee (id,name,salary)=   class    let mutable Id= id    let mutable Name = name    let mutable Salary = salary     member x.Display() =     printfn “%d %s %0.2f” Id Name Salary     end let a = new Employee(100,”Rajkumar”,25000.00) a.Display() let a1 = new Employee(101, “john”,26000.00) a1.Display() 

Output:

100 Rajkumar 25000.00 101 john 26000.00

Next TopicF# Self Identifier

F# Constructor

F# Constructor

F# Constructor Example

F# Non-parameterized Constructor

F# Parameterized Constructor

Install Express.js

Data Organization in Firebase Real time Database

You may also like