F# explicit match vs function syntax

Question

Sorry about the vague title, but part of this question is what these two syntax styles are called:

let foo1 x = 
    match x with
    | 1 -> \"one\"
    |         


        

Answer 1

The match version is called a "pattern matching expression". The function version is called a "pattern matching function". Found in section 6.6.4 of the spec.

Using one over the other is a matter of style. I prefer only using the function version when I need to define a function that is only a match statement.