First-class functions
editable example
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ghul
use IO.Std.write_line
use Ghul.Pipes
use Collections.LIST
use System.Math
>>[A, B, C](f: A -> B, g: B -> C) -> A -> C =>
x => g(f(x))
let cube = x => x * x * x
let cube_root = x => Math.cbrt(x)
let functions = LIST()
functions.add(Math.sin)
functions.add(Math.cos)
functions.add(cube)
let inverses = LIST()
inverses.add(Math.asin)
inverses.add(Math.acos)
inverses.add(cube_root)
for (function, inverse) in functions |> zip(inverses) do
let round_trip = function >> inverse
write_line("{round_trip(0.5D):F6}")
od