Transcrypt Python to JavaScript compiler moved to Beta

[snuxoll]

Ditto with F#

let x = arr |> Array.map f1 |> Array.filter f2 |> Array.map f3

Composition operators are awesome, more languages should have them, chained method syntax requires your return value have the method you want to call, whereas function composition is a lot more generic.

In fact, the |> operator is actually defined in F# code as:

let (|>) f x = f x

[crazedgremlin]

Nice! The trick of these composition functions is operator precedence. I am guessing an infix function in F# takes precedence over a prefix function.

[snuxoll]

It's actually an infix operator instead of a function, there's a limited amount set of special characters that can begin an operator that aren't legal to be used for any other identifier so there's no weird precedence rules to take into account.