AnYuan

// Scanner

extension Scanner {
    public struct Error: Swift.Error {
        let location: Int
        
        var localizedDescription: String {
            return "scan failure at location: \(location)"
        }
    }

AnYuan

enum Style {
    case none
    case bold
    case italic
    case boldItalic
    case sansSerif(bold: Bool, italic: Bool)
    case script(bold: Bool)
    case fraktur(bold: Bool)
    case doubleStruck
    case monospace

AnYuan

public enum BookingCode: String {
    case firstClass = "F"
    case businessClass = "J"
    case premiumEconomy = "W"
    case economy = "Y"
}

extension BookingCode: ExpressibleByStringLiteral {
    public init(stringLiteral value: String) {
        self.init(rawValue: value)!

AnYuan

extension BehaviorRelay where Element: RangeReplaceableCollection {
    func acceptAppending(_ element: Element.Element) {
        accept(value + [element])
    }
}

AnYuan

@discardableResult
func measure<A>(name: String = "", _ block: () -> A) -> A {
    let startTime = CACurrentMediaTime()
    let result = block()
    let timeElapsed = CACurrentMediaTime() - startTime
    print("Time: \(name) - \(timeElapsed)")
    return result
}

let result = measure { (0..<1_000_000).reduce(0, +) }

AnYuan

#import <mach/mach_time.h>

uint64_t start = mach_absolute_time();

// do stuff to be timed

uint64_t end = mach_absolute_time();
uint64_t elapsed = end - start;

mach_timebase_info_data_t info;

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+ (CGSize)rectForAttributedString:(NSAttributedString *)string
                             size:(CGSize)theSize {
    if (!string || CGSizeEqualToSize(theSize, CGSizeZero)) {
        return CGSizeZero;
    }
    
    // setup TextKit stack
    NSTextContainer *textContainer = [[NSTextContainer alloc] initWithSize:theSize];
    NSTextStorage *textStorage = [[NSTextStorage alloc] initWithAttributedString:string];
    NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];

AnYuan

let xCoord = 10
let yCoord = 20
let radius = 8

let dotPath = UIBezierPath(ovalInRect: CGRectMake(xCoord, yCoord, radius, radius))

let layer = CAShapeLayer()
layer.path = dotPath.CGPath
layer.strokeColor = UIColor.blueColor().CGColor

AnYuan

//
//  AYListStickyHeaderCollectionViewLayout.m
//  
//
//  Created by anyuan on 30/11/2017.
//

#import "AYListStickyHeaderCollectionViewLayout.h"

@implementation ListStickyHeaderCollectionViewLayout

AnYuan

import Foundation

enum Result<T, E: Error> {
    case success(T)
    case failure(E)
}


extension Result {