ashevin

//: Playground - noun: a place where people can play

import UIKit

extension Array {
    func binarySearch<T: Comparable>(key: T, returnInsertionIndex: Bool = false) -> Int? {
        var range = 0..<self.count

        var midIndex: Int = 0
        var value: T?

cihancimen

- (BOOL)stringContainsEmoji:(NSString *)string {
    __block BOOL returnValue = NO;
    [string enumerateSubstringsInRange:NSMakeRange(0, [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:
     ^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
         
         const unichar hs = [substring characterAtIndex:0];
         // surrogate pair
         if (0xd800 <= hs && hs <= 0xdbff) {
             if (substring.length > 1) {
                 const unichar ls = [substring characterAtIndex:1];