What does -> mean in F#?

Question

I\'ve been trying to get into F# on and off for a while but I keep getting put off. Why?

Because no matter which \'beginners\' resource I try to look at I see very

Answer 1

In the context of defining a function, it is similar to => from the lambda expression in C# 3.0.

F#: let f = fun x -> x*x
C#: Func f = x => x * x;

The -> in F# is also used in pattern matching, where it means: if the expression matches the part between | and ->, then what comes after -> should be given back as the result:

let isOne x = match x with
 | 1 -> true
 | _ -> false