Becca Royal-Gordon beccadax

Objective-C implementations in Swift

Proposal: SE-NNNN
Authors: Becca Royal-Gordon
Review Manager: TBD
Status: Awaiting implementation (but only of resilience support)
Implementation: In main and release/6.0, behind the ObjCImplementation experimental feature flag
Upcoming Feature Flag: ObjCImplementation

	/// Passes a pointer to an uninitialized instance of `type` to `body`.
	/// If `body` returns `true`, indicating that the memory has now been
	/// initialized, returns the instance; otherwise returns `nil`.
	@usableFromInline func withUninitialized<T>(
	_ type: T.Type, do body: (UnsafeMutablePointer<T>) -> Bool
	) -> T? {
	let ptr = UnsafeMutablePointer<T>.allocate(capacity: 1)
	defer { ptr.deallocate() }

	guard body(ptr) else {

	struct _AppendingStringInterpolation<Result: ExpressibleByStringInterpolation> {
	var result: Result
	}

	protocol ExpressibleByAppendingStringInterpolation: ExpressibleByStringInterpolation where StringInterpolation == _AppendingStringInterpolation<Self> {
	init(stringLiteral: String)
	mutating func append(_ value: Self)
	}

	extension ExpressibleByAppendingStringInterpolation where StringInterpolation == _AppendingStringInterpolation<Self> {

	//
	// UserDefaults+Codable.swift
	// Converter UltraLight
	//
	// Created by Brent Royal-Gordon on 8/31/17.
	// Copyright © 2017 Architechies. All rights reserved.
	// MIT-licensed, go nuts with it.
	//

	import Foundation

	//
	// UICollectionViewLayout+indexPaths.swift
	// Converter Calc
	//
	// Created by Brent Royal-Gordon on 7/26/17.
	// Copyright © 2017 Architechies. All rights reserved.
	//

	import UIKit

	import Foundation
	import ExplicitlyConvertible

	let i8: Int8 = 8
	let i64: Int64 = 64

	i64 + ^i8 // => 72

	struct Person {
	var name: String

	// First, let's test out the basic design. This is basically just an
	// HList.

	// This recurses to the right because that makes subscripting simpler,
	// at the cost of making appending impossible to generalize.
	public protocol TupleProtocol: RandomAccessCollection
	where Index == Int, IndexDistance == Int, Element == Any
	{
	associatedtype First
	associatedtype Rest //: TupleProtocol