Haskell list difference operator in F#

Is there an equivalent operator to Haskell's list difference operator \\ in F#?

From stackoverflow fryguybob

• Nope... Just write it and make it an infix operator --using the set of special characters. // will work as an infix operator, for example, but not \\. See the manual:

  infix-op :=

  or || & && <OP >OP $OP = |OP &OP ^OP :: -OP +OP *OP /OP %OP
  
  **OP
  

  prefix-op :=

  !OP ?OP ~OP -OP +OP % %% & &&
  

  From nlucaroni

• Just convert the lists to sets using the built-in set function and then use the built-in - operator:

  set xs - set ys
  

  For example:

  > set [1..5] - set [2..4];;
  val it : Set<int> = seq [1; 5]
  

  Ganesh Sittampalam : This won't handle duplicates correctly.
  From Jon Harrop