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

Just for completeness sake, I just got to page 321 of Expert FSharp:

"Note, Listing 12-2 uses the expression form function pattern-rules -> expression. This is equivalent to (fun x -> match x with pattern-rules -> expression) and is especially convenient as a way to define functions working directly over discriminated unions."