Also, we can user function composition to UI implementation #CodePiece #tryswiftnyc

CodePiece.swift

import UIKit

let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
NSMutableParagraphStyle() |> (prop(\.alignment)) { _ in .center }

func set<Root, Value>(
    _ kp: WritableKeyPath<Root, Value>,
    _ value: Value
    )
    -> (Root) -> Root {
        return (prop(kp)) { _ in value }
}

NSMutableParagraphStyle() |> set(\.alignment, .center)

let autolayoutStyle = set(\UIView.translatesAutoresizingMaskIntoConstraints, true)
UIView() |> autolayoutStyle

class MyViewController: UIViewController {
    let subtitleLabel = UILabel()
        |> set(\.font, .systemFont(ofSize: 17))
        >>> set(\.textColor, UIColor.blue)
}