Function Application Operator ($) in F#?

.net, f#, functional-programming

Solution

The standard F# idiom for this is the forward pipe operator `|>` were you would rewrite

let identifier = spaces_surrounded (many1Satisfy isLetter)

as

let identifier = many1Satisfy isLetter |> spaces_surrounded

you can also use the backward pipe operator `<|` if you want to maintain the original order, but this tends to be a little less common

let identifier = spaces_surrounded <| many1Satisfy isLetter

Problem

Let's say I have this code ``` let identifier = spaces_surrounded (many1Satisfy isLetter) ``` I was wondering if it there was any native F# function that allowed me to refactor it to ``` let identifier = spaces_surrounded $ many1Satisfy isLetter ``` that is, something such as ``` let ($) f1 f2 = f1 (f2) ``` (that is if I am not mistaken, my Haskell skills are not too sharp..).

Original source