chillpop

#!/usr/bin/env python

from json import load
from collections import defaultdict, deque, namedtuple

# handle transaction cancellations
# disallow payments with insufficient balance
#   (- allow deferred up to ... time)
# handle payments to (but not from) unknown accounts

chillpop

protocol StringEnum {
    var rawValue: String { get }
}

extension Dictionary {
    subscript(enumKey: StringEnum) -> Value? {
        get {
            if let key = enumKey.rawValue as? Key {
                return self[key]
            }

chillpop

@property (nonatomic, strong) dispatch_semaphore_t waitSemaphore

- (void)setUp {
    [super setUp];
    
    // Set-up code here.
    
    self.waitSemaphore = dispatch_semaphore_create(0);
}

chillpop

    //get a unique ID
    NSString *deviceID = nil;
    UIDevice *device = [UIDevice currentDevice];
    if ([device respondsToSelector:@selector(identifierForVendor)]) {
        deviceID = [[device identifierForVendor] UUIDString];
    }
    else {
        //retrieve an NSDefaults stored UUID
        NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
        NSString *uuidKey = @"UUID";