F# Discriminated Unions Naming elements of tuples within discriminated unions
Example
When defining discriminated unions you can name elements of tuple types and use these names during pattern matching.
type Shape =
| Circle of diameter:int
| Rectangle of width:int * height:int
let shapeIsTenWide = function
| Circle(diameter=10)
| Rectangle(width=10) -> true
| _ -> false
Additionally naming the elements of discriminated unions improves readability of the code and interoperability with C# - provided names will be used for properties' names and constructors' parameters. Default generated names in interop code are "Item", "Item1", "Item2"...
