Catfish-Man

#import <Foundation/Foundation.h>
#import <time.h>
#import <os/lock.h>

#define ITERS 2000
#define NSEC_PER_ITER(time) (((double)time * (double)NSEC_PER_SEC) / (double)ITERS)

#define TEST(body, name) do {\
    start = [NSDate date];\
    for (int i = 0; i < ITERS; i++) {\

CodaFi

Modular Swift

• Proposal: SE-NNNN
• Authors: Robert Widmann, Jaden Geller
• Review Manager: TBD
• Status: Awaiting review

Introduction

Gankra

Swift Ownership Manifesto TL;DR

Most of the manifesto is background and detailed definitions -- if you're confused or want details, read the manifesto!

https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20170213/032155.html

Note also that manifestos aren't complete proposals -- syntax and details may change!

One piece of background: inout is kinda complicated because it can be used on computed properties -- foo(&val.x) might be sugar for

Catfish-Man

#import <Foundation/Foundation.h>
int main(int argc, const char * argv[]) {
    @autoreleasepool {
        const long count = 10000000;
        const char *str1 = "hellohello"; //fits in a tagged pointer
        const char *str2 = "hellohelQo"; //at this character count, can only fit in a tagged pointer by using <8 bits per character, which requires dropping less frequently used chars like 'Q'
        const char *str3 = "Northern Sami"; //this string is encountered frequently enough that it's baked into a perfect hash table in CoreFoundation
        const char *str4 = "hellohellü"; //this string can't be tagged *and* can't be stored using an ASCII backing store

        NSDate *start = [NSDate date];

khanlou

import Foundation

final class SafeSyncQueue {

    struct QueueIdentity {
        let label: String
    }

    let queue: DispatchQueue

shaps80

Open/Close Xcode console: cmd+shift+y

Jump to definition, but in the assistant editor: cmd+opt+click

Open/close navigators pane: cmd+0

Open/close inspectors pane:

steipete

//
//  SpinlockTestTests.swift
//  SpinlockTestTests
//
//  Created by Peter Steinberger on 04/10/2016.
//  Copyright © 2016 PSPDFKit GmbH. All rights reserved.
//

import XCTest

ole

// We can't use `Character` or `String` ranges directly because they aren't countable
// Create a countable range of ASCII values instead
let range = UInt8(ascii: "a")...UInt8(ascii: "z") // CountableClosedRange<UInt8>

// Convert ASCII codes into Character values
range.map { Character(UnicodeScalar($0)) } // Array<Character>
// → ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]

steipete

// clang -cc1 -analyzer-checker-help
// OVERVIEW: Clang Static Analyzer Checkers List
// USAGE: -analyzer-checker <CHECKER or PACKAGE,...>
// 
// CHECKERS:
//   alpha.core.BoolAssignment       Warn about assigning non-{0,1} values to Boolean variables
//   alpha.core.CallAndMessageUnInitRefArg
//                                   Check for logical errors for function calls and Objective-C message expressions (e.g., uninitialized arguments, null function pointers, and pointer to undefined variables)
//   alpha.core.CastSize             Check when casting a malloc'ed type T, whether the size is a multiple of the size of T
//   alpha.core.CastToStruct         Check for cast from non-struct pointer to struct pointer

russbishop

// Paste me into a playground!

import Cocoa

//: # Basic Setup

protocol FancyProtocol {
    associatedtype Thing
    func holdPinkyUp(x: Thing)
}