cxa

- (NSString *)convertISBN10To13:(NSString *)isbn10
{
  NSString *prefix = [NSString stringWithFormat:@"978%@", [isbn10 substringToIndex:9]];
  NSInteger sum = 0;
  for (int i=0; i<12; i++){
    char c = [prefix characterAtIndex:i];
    int n = c - '0';
    int w = (i % 2) ? 3 : 1;
    sum += w * n;
  }

cxa

func bytes<T: IntegerType>(i: T) -> [UInt8] {
  let p = UnsafeMutablePointer<T>.alloc(1)
  p.memory = i
  let b = unsafeBitCast(p, UnsafePointer<UInt8>.self)
  let bytes = reduce(0..<sizeof(T), []) { $0 + [b[$1]] }
  p.destroy()
  return bytes
}

cxa

enum ShiftKeyType {
  case None
  case Once
  case Always
}

enum PunctuationSwitcherType {
  case More
  case Numeric
}

cxa

//  BridgeHeader.h

#import <unicode/uchar.h>

//  UnicodeBlock.swift

import Foundation

class UnicodeBlock {
  class var blocks: UnicodeBlock[] {