alexpersian

import Foundation
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true

func dispatchOnce(_ predicate: inout Bool, _ block: @noescape () throws -> Void) rethrows {
    objc_sync_enter(predicate)
    if !predicate {
        do {
            predicate = true

alexpersian

struct Dispatch {
    private func once(var predicate: Bool, block: () -> Void) {
        if !predicate {
            block()
            predicate = true
        }
    }
}

alexpersian

//
//  HandleUserDefaults.swift
//  Student
//
//  Created by Alex Persian on 6/9/15.
//  Copyright (c) 2015 Geo-Comm Inc. All rights reserved.
//

import Foundation

alexpersian

//TODO: Write a test for the hex string -> UIColor conversion
func checkHexStringForDateString(dateString: String) {
    // given
    let changes: [String: String] = [
        "1" : "A",
        "2" : "B",
        "3" : "C",
        "4" : "D",
        "5" : "E",
        "6" : "F"

alexpersian

//
//  CameraViewController.swift
//  SpotWalk
//
//  Created by Alex Persian on 10/25/15.
//  Copyright © 2015 alexpersian. All rights reserved.
//

import UIKit
import AVFoundation

alexpersian

app.get('/api/posts', function(req, res) {
    Post.find(function(err, posts) {
        // if there is an error retrieving, send the error
        // nothing after res.send(err) will execute if there is one
        if (err) {
            res.send(err);
        }
        res.json(posts);
    });
});

alexpersian

app.post('/api/posts', function(req, res) {
        var post = new Post();
        post.name = req.body.name;
        post.desc = req.body.desc;
        post.quantity = req.body.quantity;
        post.time = new Date();

        post.save(function(err) {
            if (err) {
                res.send(err);

alexpersian

VYLZdw

A Pen by Alex Persian on CodePen.

License.