swift-developers-japan
main / swiftbot-sandbox
hoge @swiftbot#4647 print("hello") ```
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execへ渡している様に見えるのですが、大丈夫ですか？ https://github.com/kishikawakatsumi/swift-playground/blob/master/sandbox.js#L56 
let 🐣 = "hiyoko" print("🐣 = \(🐣)")
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/usercode/main.swift:1:8: error: no such module 'SwiftyMath' import SwiftyMath ^
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）めっちゃ便利ですね！
HISTORY The original version of this random number generator used the RC4 (also known as ARC4) algorithm. In OS X 10.12 it was replaced with the NIST-approved AES cipher, and it may be replaced again in the future as cryptographic techniques advance. A good mnemonic is ``A Replacement Call for Random''. 訳すと RC4(ARC4とも言う)アルゴリズムの実装だけど OS10.12で AESに変わったし、後にまた変わるから、 A Replacement Call For Random の略として覚えると良いよ 
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docker-compose.yml
version: '3' services: playground: build: . environment: HOST_PWD: ${PWD} ports: - "80:8080" volumes: - /var/run/docker.sock:/var/run/docker.sock - .:/playground command: ["sh", "-c", "npm install && npm start"]
Dockerfile
FROM docker:latest RUN apk --update add bash nodejs && rm -rf /var/cache/apk/* WORKDIR /playground
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a widget of type Crate<Int>
1--xなのもこのライブラリのデフォルトによります。 https://github.com/kishikawakatsumi/swift-compiler-discord-bot/blob/master/app.js#L87 
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GUILD_TEXTの場合（通常のチャンネル）だけ受け付ける様にしました。 https://discordapp.com/developers/docs/resources/channel#channel-object-channel-types
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EXPOSEサポートしてなかった。 https://devcenter.heroku.com/articles/container-registry-and-runtime#unsupported-dockerfile-commands
import Foundation let versionOfRxSwift = ProcessInfo.processInfo.environment["RXSWIFT_VERSION"] ?? "" print("RxSwift version: \(versionOfRxSwift)") import RxSwift _ = Observable<String>.create { observerOfString in print("Observable created") observerOfString.on(.next("😉")) observerOfString.on(.completed) return Disposables.create() } .subscribe { event in print(event) } 2
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import SwiftyMath import SwiftyTopology let S = SimplicialComplex.sphere(dim:3) let H = Homology(S, Int.self) print(H.detailDescription) import Foundation import RxSwift _ = Observable<String>.create { observerOfString in print("Observable created") observerOfString.on(.next("😉")) observerOfString.on(.completed) return Disposables.create() } .subscribe { event in print(event) } import CryptoSwift let data = Data(bytes: [0x01, 0x02, 0x03]) let bytes = data.bytes print(bytes) print(Array<UInt8>(hex: "0x010203")) print(bytes.toHexString()) print("123".md5()) 1 
import Foundation var hint = addrinfo(), addrinfo0: UnsafeMutablePointer<addrinfo>? = nil #if _runtime(_ObjC) hint.ai_socktype = SOCK_STREAM #else hint.ai_socktype = Int32(SOCK_STREAM.rawValue) #endif let error = getaddrinfo("whois.nic.google", "nicname", &hint, &addrinfo0) guard error == 0 else { print(String.init(cString: gai_strerror(error))) exit(error) } defer { freeaddrinfo(addrinfo0) } var addrinfoNext = addrinfo0?.pointee while let addrinfo = addrinfoNext { defer { addrinfoNext = addrinfo.ai_next?.pointee } let sock = socket(addrinfo.ai_family, addrinfo.ai_socktype, addrinfo.ai_protocol) guard sock != -1, connect(sock, addrinfo.ai_addr, addrinfo.ai_addrlen) == 0 else { print(String(cString: strerror(errno))) continue } let handle = FileHandle(fileDescriptor: sock, closeOnDealloc: true) handle.write("xcode.app\r\n".data(using: .utf8)!) FileHandle.standardOutput.write(handle.readDataToEndOfFile()) } 1
import Foundation import RxSwift class Hoge: NSObject {} extension Reactive where Base == Hoge { class Piyo {} var hoge: Observable<Int> { return Observable.create { observer in var piyo = Piyo() observer.onNext(42) return Disposables.create {} } } } let hoge = Hoge() hoge.rx.hoge.subscribe(onNext: { res in print(res) }) 1
4.1.1/Libraries/*、 3.0.2/Libraries/* ... のようにディレクトリでバージョニングして、それぞれのPackage.swiftでそのバージョンで使うライブラリを指定するって感じに改修ですね。 そうすると使う方（Botのプログラム）で -L ${SWIFT_VERSION}/Libraries/All のように切り替えられるのでうまくいくと思うんでなんだったらPRしてくれると 
です 1
import Foundation protocol EnumCollection: Hashable { static var all: [Self] { get } } extension EnumCollection { static func cases() -> AnySequence<Self> { typealias SelfType = Self return AnySequence { () -> AnyIterator<SelfType> in var raw = 0 return AnyIterator { let current: Self = withUnsafePointer(to: &raw) { $0.withMemoryRebound(to: SelfType.self, capacity: 1) { $0.pointee } } guard current.hashValue == raw else { return nil } raw += 1 return current } } } static var all: [Self] { return Array(self.cases()) } } enum SampleEnum: String, EnumCollection { case hoge = "hoge" case foo case bar = "BAR" } print(SampleEnum.all) 1
swiftcへ渡すオプションを.build/debug.yamlから取り出して、それを渡すと良い。 https://github.com/norio-nomura/SwiftCompilerDiscordappBot/blob/8962b0dec3723876b2ac8a105653fce8567025eb/Sources/SwiftCompilerDiscordappBot/App.swift#L201-L207 
struct A<T1, T2> {} typealias B<T> = A<Int, T> typealias D = A<Int, Int> protocol C {} extension A: C where T1 == Int {} 1protocol P0 { init(string: String) } class Animal { init() {} convenience init(string: String) { self.init() } var str1: String = "" } final class Cat : Animal, P0 { var str2: String = "" } func createP0<X: P0>() -> X { return X.init(string: "apple") } let cat: Cat = createP0() print(cat) 1 2
struct A { } struct B { } protocol P { associatedtype Assoc = A } struct S<T>: P { } extension S where T == Int { typealias Assoc = B } print(S<String>.Assoc()) 1
struct A<T> { } extension A where T == Bool { typealias B = String } extension A { typealias B = Int } 1
import Foundation //import PlaygroundSupport //PlaygroundPage.current.needsIndefiniteExecution = true let group1 = DispatchGroup() func a(_ name: String) { group1.enter() print("Good night, \(name)..") sleep(2) print("Morning, \(name)!") group1.leave() } DispatchQueue.global().async { a("Anna") } DispatchQueue.global().async { a("Bob") } DispatchQueue.global().async { a("Cony") } group1.notify(queue: .main) { print("*** Good morning, all! ***") //PlaygroundPage.current.finishExecution() } // Xcode 9.4.1 と 10.0 beta2 どちらも同じ結果でした /* Playground Settings - Platform: macOS Good night, Cony.. Good night, Anna.. Good night, Bob.. Morning, Cony! Morning, Bob! Morning, Anna! *** Good morning, all! *** */ /* Playground Settings - Platform: iOS Good night, Anna.. Good night, Cony.. Good night, Bob.. *** Good morning, all! *** */ 1
import Foundation import PlaygroundSupport PlaygroundPage.current.needsIndefiniteExecution = true let group1 = DispatchGroup() func a(_ name: String) { group1.enter() print("Good night, \(name)..") sleep(2) print("Morning, \(name)!") group1.leave() } DispatchQueue.global().async { a("Anna") } DispatchQueue.global().async { a("Bob") } DispatchQueue.global().async { a("Cony") } group1.notify(queue: .main) { print("*** Good morning, all! ***") PlaygroundPage.current.finishExecution() } // Xcode 9.4.1 と 10.0 beta2 どちらも同じ結果でした /* Playground Settings - Platform: macOS Good night, Cony.. Good night, Anna.. Good night, Bob.. Morning, Cony! Morning, Bob! Morning, Anna! *** Good morning, all! *** */ /* Playground Settings - Platform: iOS Good night, Anna.. Good night, Cony.. Good night, Bob.. *** Good morning, all! *** */ 上記のコードを Playgroundで実行すると、Platformによって実行結果が変わってしまいます。macOSにすると望む結果になるんですけど、iOSだと待ち合わせしてくれないのです。 import Foundation let group1 = DispatchGroup() group1.notify(queue: .main) { print("*** Good morning, all! ***") } sleep(1) 1
https://developer.apple.com/documentation/dispatch/dispatchqueue/2300095-async 1
？？
enum Result<Value, Error> { case success(Value) case failure(Error) } extension Result: Equatable where Value: Equatable, Error: Equatable { static func == (lhs: Result, rhs: Result) -> Bool { switch (lhs, rhs) { case let (.success(lhs), .success(rhs)): return lhs == rhs case let (.failure(lhs), .failure(rhs)): return lhs == rhs case (.success, .failure), (.failure, .success): return false } } } print(Result<String, Never>.success("a") == Result<String, Never>.success("b"))
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self 差し替えのも封じられたかな？最後の付け足しか Q&A かだったのでスライド↓中にコードが見当たらない・・・。 https://speakerdeck.com/kateinoigakukun/konpairakaraniu-jie-kuswift-method-dispatch-1
w @Kishikawa Katsumi SwiftBot に組み込んで頂いてたと思うので、よかったら（とても暇なときにでも）アップデートして下さい 
1 あんまり重い処理を回されては困るというようなことがあれば、自分でホスティングします
https://github.com/kishikawakatsumi/swift-playground 
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struct RGBA<Channel> { var red: Channel var green: Channel var blue: Channel var alpha: Channel } let rgbaArray = [RGBA(red: 255, green: 127, blue: 0, alpha: 255)] rgbaArray.withUnsafeBufferPointer { rgbaPointer in print(rgbaPointer[0]) rgbaPointer.withMemoryRebound(to: UInt8.self) { uint8Pointer in print(uint8Pointer[0]) } } 1
（
#if os(macOS) || os(iOS) || os(watchOS) || os(tvOS) // FIXME: These properties were introduced in ICU 57, but Ubuntu 16.04 comes // with ICU 55 so the values won't be correct there. Exclude them on // non-Darwin platforms for now; bundling ICU with the toolchain would resolve // this and other inconsistencies (https://bugs.swift.org/browse/SR-6076). /// A Boolean value indicating whether the scalar has an emoji /// presentation, whether or not it is the default. 略 @available(macOS 10.12.2, iOS 10.2, tvOS 10.1, watchOS 3.1.1, *) public var isEmoji: Bool { return _hasBinaryProperty(__swift_stdlib_UCHAR_EMOJI) }
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https://github.com/apple/swift-corelibs-foundation/pull/1813#discussion_r243387179 
♂️
DataProtocol.lastRange(of:) の件、apple/swiftの（つまりDarwin用の）swift-5.0-branchだけ正しい状態だったので、まずapple/swiftのmasterに修正のPR出してみました https://github.com/apple/swift/pull/25065 1
OpenCombine https://github.com/broadwaylamb/OpenCombine をインポート出来るようにしました。 @swift-5.1.5
import OpenCombine let publisher = Just(28) _ = publisher .map { number in return "Antoine's age is \(number)" } .sink { (value) in print(value) } 
Future, Promiseは swift-nio 版のtypealias + extension https://github.com/vapor/core/blob/master/Sources/Async/Async%2BNIO.swift#L4-L8 swift-nioにはストリームぽいのは無かったと思う。 
Utility package containing tools for byte manipulation, Codable, OS APIs, and debugging. - vapor/core
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swift-3.0-RELEASEから壊れてたのね。 https://github.com/apple/swift-corelibs-foundation/commit/80e0f056716497f30525ae423ab56602595d5b25
let a: [UInt8] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15] let b = UnsafeRawPointer(a).load(fromByteOffset: 8, as: Int.self).littleEndian 1
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; ModuleID = '-' source_filename = "-" target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" module asm ".section .swift1_autolink_entries,\220x80000000\22" %TSnySiG = type <{ %TSi, %TSi }> %TSi = type <{ i64 }> @0 = private unnamed_addr constant [46 x i8] c"Can't form Range with upperBound < lowerBound\00" @1 = private unnamed_addr constant [112 x i8] c"/home/buildnode/jenkins/workspace/oss-swift-5.2-package-linux-ubuntu-16_04/swift/stdlib/public/core/Range.swift\00" @2 = private unnamed_addr constant [12 x i8] c"Fatal error\00" @__swift_reflection_version = linkonce_odr hidden constant i16 3 @_swift1_autolink_entries = private constant [49 x i8] c"-lswiftSwiftOnoneSupport\00-lswiftCore\00-lLibraries\00", section ".swift1_autolink_entries", align 8 @llvm.used = appending global [2 x i8*] [i8* bitcast (i16* @__swift_reflection_version to i8*), i8* getelementptr inbounds ([49 x i8], [49 x i8]* @_swift1_autolink_entries, i32 0, i32 0)], section "llvm.metadata", align 8 define protected i32 @main(i32, i8**) #0 { entry: %2 = bitcast i8** %1 to i8* %3 = call swiftcc i1 @"$s4main8containsySbSi_SitF"(i64 1, i64 100) ret i32 0 } define hidden swiftcc i1 @"$s4main8containsySbSi_SitF"(i64, i64) #0 { entry: %i.debug = alloca i64, align 8 %2 = bitcast i64* %i.debug to i8* call void @llvm.memset.p0i8.i64(i8* align 8 %2, i8 0, i64 8, i1 false) %lim.debug = alloca i64, align 8 %3 = bitcast i64* %lim.debug to i8* call void @llvm.memset.p0i8.i64(i8* align 8 %3, i8 0, i64 8, i1 false) %4 = alloca %TSnySiG, align 8 %5 = alloca %TSi, align 8 %6 = alloca %TSi, align 8 %7 = alloca %TSnySiG, align 8 %8 = alloca %TSi, align 8 store i64 %0, i64* %i.debug, align 8 store i64 %1, i64* %lim.debug, align 8 %9 = bitcast %TSnySiG* %4 to i8* call void @llvm.lifetime.start.p0i8(i64 16, i8* %9) br label %10 10: ; preds = %entry %11 = icmp slt i64 %1, 0 1
let foo = Array {} print(type(of: foo))
Set-Cookie: … set-cookie: … を入れる様になり、使ってたライブラリ内で let headers = [String: Any](uniqueKeysWithValues: response.allHeaderFields.map { (($0.key as! String).lowercased(), $0.value) }) としてcase insensitive uniqueであることを期待してた箇所でランタイムエラーになってた。 1
struct Box<T> {} @_functionBuilder struct MyBuilder { static func buildBlock(_ component: Box<Never>) -> Box<Never> { component } } func take(_ c: () -> Box<Never>) {} func takeBuild(@MyBuilder _ c: () -> Box<Never>) {} take { Box() } takeBuild { Box() } buildExpression(_:) が必要ですね。
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