Microsoft is previewing new syntax for string interpolation in F#, an improvement intended to make it easier to work with interpolated strings.
Interpolated strings allow developers to embed F# expressions into string literals. But they can become cumbersome when dealing with text that contains many curly braces. The F# interpolation syntax addresses this. Announced July 27 and modeled after how interpolation works in C# raw strings, the new syntax maintains backward compatibility with F#’s triple-quoted strings.