krzyzanowskim

func XCTAssertThrowsError2<T>(_ expression: () throws -> T, _ message: @autoclosure () -> String = "", file: StaticString = #file, line: UInt = #line, _ errorHandler: (Error) -> Void = { _ in }) {
  do {
    _ = try expression()
    XCTFail(message())
  } catch {
    errorHandler(error)
  }
}

krzyzanowskim

class A {}

// foo

func foo<T>(_ v: T, handler: () -> Void) -> T {
    print("regular")
    return v
}

func foo<T>(_ v: T?, handler: () throws -> Void) rethrows -> T? {

krzyzanowskim

// https://bugs.swift.org/browse/SR-10906

import Foundation

protocol ViewDataSource: class {
    func foo<T>() -> [T]
}

class View {
    weak var delegate: ViewDataSource?

krzyzanowskim

class Node: CustomStringConvertible {
    let title: String
    var parent: Node?
    var children: [Node] = [] {
        didSet {
            children.forEach({ $0.parent = self })
        }
    }
    
    var description: String {

krzyzanowskim

@discardableResult
public func with<T>(_ value: T, _ builder: (T) -> Void) -> T {
    builder(value)
    return value
}

@discardableResult
public func with<T>(_ value: T, _ builder: (T) throws -> Void ) rethrows -> T {
    try builder(value)
    return value

krzyzanowskim

import Cocoa

final class WindowController: NSWindowController {
    init() {
        let window = NSWindow()
        window.styleMask = [.closable, .miniaturizable, .resizable, .titled]
        super.init(window: window)
        
        self.shouldCascadeWindows = false
        window.setFrameAutosaveName(String(describing: type(of:self)))

krzyzanowskim

import Foundation

public class Foo: Por {
    public required init() {}
}

public protocol Por {
    associatedtype As = Void
    init(parameters: As?) throws
}

krzyzanowskim

/*
 * Optional value is not initialized with nil, instead is initialized with 0 value
 */

let p = UnsafeMutablePointer<UInt8?>.allocate(capacity: 0)

// p.initialize(repeating: nil, count: 1)
print("Value Type: \(type(of:p.pointee))")

if let value = p.pointee {

krzyzanowskim

import Foundation

// Process stream
// http://ascii-table.com/ansi-escape-sequences-vt-100.php
// http://ascii-table.com/ansi-escape-sequences.php
public final class ANSIEscapeProcessor {

    public func tokens(string: String) -> [Token] {
        var tokens: [Token] = []

krzyzanowskim

Load command 12
          cmd LC_LOAD_DYLIB
      cmdsize 80
         name @executable_path/../Frameworks/libSwiftSyntax.dylib (offset 24)
   time stamp 2 Thu Jan  1 01:00:02 1970
      current version 0.0.0
compatibility version 0.0.0
Load command 43
          cmd LC_RPATH
      cmdsize 32