string interpolation in F#

interpolation.fsx

// string interpolation in F# can be type safe
// specifying the data type you need in the "hole" of that string
// or you can fallback to the "ToString" one

$"Frank is %i{10} years old"
$"That'ts not %b{true}"
$"Bet' you can't print a list %A{[1;2;3;4]}"
$"Yeah but do tou need to specify data type? %{false}"

// or the equivalent in older versions which is good to use as well

sprintf "Frank is %i years old" 10
sprintf "That'ts not %b" true
sprintf "Bet' you can't print a list %A" [1;2;3;4]
sprintf "Yeah but do tou need to specify data type? %s" "true"