Swift Operators

Operators.swift

import Foundation

// MARK: - Operators

infix operator |>   : AdditionPrecedence
infix operator <>   : AdditionPrecedence
infix operator >>>  : AdditionPrecedence

// MARK: - Implementations

public func |> <A, B> (a: A, f: (A) -> B) -> B {
    return f(a)
}

public func <> <A>(_ f: @escaping (A) -> Void,
                   _ g: @escaping (A) -> Void) -> (A) -> Void {
    return { a in
        f(a)
        g(a)
    }
}

public func >>> <A, B, C>(_ a2b: @escaping (A) -> B,
                          _ b2c: @escaping (B) -> C) -> (A) -> C {
    return { a in b2c(a2b(a)) }
}