Happy new year

Happy new year:



Submitted by: skunkich

Posted at: 2011-12-30 16:42:17

See full post and comment: http://9gag.com/gag/1389766

Inc’s 10 Essential Economic Blogs

Inc’s 10 Essential Economic Blogs:
Nice grouping of economic blogs named “essentail” in Inc this week. (click thru for the full discussion on each).

They describe the list as “for independent thinkers only: These online columnists see around the curves to the global economic trends that will affect your business.”

Nice company to keep. Here is their top 10:

1. Seeking Alpha Market Currents


2. The Big Picture


3. Real Time Economics


4. DealBook


5. Financial Armageddon


6. FT Alphaville


7. Zero Hedge


8. Naked Capitalism


9. Calculated Risk


10. Mish’s Global Economic Analysis

These lists always leave out so many deserving sites and blogs, but this run is as good as any other. Always nice to be included.

>

Source:

10 Essential Economic Blogs

By Constantine von Hoffman | @CurseYouKhan

INC, Dec 26, 2011

http://www.inc.com/constantine-von-hoffman/10-essential-news-sources-for-economic-heretics.html

Creating an API-Centric Web Application

Creating an API-Centric Web Application:

Planning to start working on a new web application? In this tutorial, we’ll discuss how to create an API-centric web application, and explain why this is essential in today’s multi-platform world.

---

Introduction

API?

For those who are unfamiliar with the term, API is short for Application Programming Interface. According to Wikipedia:

An application programming interface (API) is a source code based specification intended to be used as an interface by software components to communicate with each other. An API may include specifications for routines, data structures, object classes, and variables.

API Visualization



Image courtesy of http://blog.zoho.com

In simpler terms, an API refers to a set of functions built into an application, which can be used by other applications (or by itself, as we’ll see later), to interact with the application. An API is a great way to expose an application’s functionality to external applications safely and securely, since all functionality that these external applications can do is limited with what functionality is exposed in the API.

What’s an “API-Centric” Web Application?

An API-Centric Web Application is a web application that basically executes most, if not, all its functionality through API calls.

An API-Centric Web Application is a web application that basically executes most, if not, all its functionality through API calls. For example, if you were to log in a user, you would send his credentials to the API, and the API would return to you a result saying if the user provided the correct user-password combination.

Another characteristic of an API-Centric Web Application is that the API will always be stateless, meaning it can’t recognize API calls by session. Since API calls will be made by usually via the backend code, it will be hard to implement session handling, since there are usually no cookies involved in that. This limitation is actually good — this “forces” a developer to build an API that works not based on the state of the current user, but rather on functionality, which in turn, makes it easier to test, since the current state of a user doesn’t need to be recreated.

Why go through all this trouble?

As web developers, we’ve seen technology evolve first hand. It’s common knowledge that people today don’t just use applications via a browser, but through other gadgets, like mobile phones and tablets. For example, this article on Mashable, entitled “Consumers Now Spending More Time on Mobile Apps Than the Web”, states:

Consumers are spending more time on mobile apps than on the web for the first time, a new report claims.

Flurry compared its mobile data to stats from comScore and Alexa, and found that in June, consumers spent 81 minutes per day using mobile apps, compared to 74 minutes of web surfing.

Here’s a more recent article from ReadWriteWeb, entitled “More People Browse On Mobile Than Use IE6 & IE7 Combined:

The latest data on browser trends from Sitepoint show that more people browse the Web on smartphones than use Internet Explorer 6 and 7 combined. Those two old clunkers have been the bugbears of Web developers for years, requiring sites to degrade as nicely as possible to that least common denominator of browsers. But it’s a new world now; 6.95% of Web activity in November 2011 was on mobile browsers, and only 6.49% was on IE 6 or 7.

As we can clearly see, more and more people get their news from alternative venues, specifically mobile devices.

What does this have to do with me creating an API-Centric Web Application?

This would inevitably lead to more usage of our application, since it can be used anywhere a person wants.

One of the main advantages of creating an API-centric application is that it helps you build functionality that can be used by ANY device, be it a browser, a mobile phone, a tablet, or even a desktop app. All you need to do is to create the API in such a way that all these devices can communicate with it, and voila! You’ll have built a centralized application that can take input and execute functionality from any device that a person has!

API-Centric Application Diagram

By creating an application in this manner, we’re able to easily take advantage of the different mediums used by different people. This would inevitably lead to more usage of an application, since it can be used anywhere a person wants.

To drive the point home, here’s an article about Twitter’s new redesigned website, which tells us about how they now use their API to power Twitter.com, essentially making it API-centric:

One of the most important architectural changes is that Twitter.com is now a client of our own API. It fetches data from the same endpoints that the mobile site, our apps for iPhone, iPad, Android, and every third-party application use. This shift allowed us to allocate more resources to the API team, generating over 40 patches. In the initial page load and every call from the client, all data is now fetched from a highly optimized JSON fragment cache.

In this tutorial, we’ll be creating a simple TODO list application that is API-Centric and create one front-end client on the browser that interacts with our TODO list application. By the end, you’ll know the integral parts of an API-Centric application, and at the same time, how to facilitate secure communication between the two. With that in mind, let’s begin!

---

Step 1: Plan the Application’s Functions

The TODO application we’ll be building in this tutorial will have the basic CRUD functions:

• Create TODO Items


• Read TODO Items


• Update TODO Items (rename, mark as done, mark as undone)


• Delete TODO Items

Each TODO item will have:

• a Title


• a Date Due


• a Description


• a flag to tell if the TODO Item Is Done

Let’s mockup the application as well so we have a guide on how it should look like afterwards:







SimpleTODO Mockup



---




Step 2: Create the API Server


Since we’re developing an API-Centric application, we’ll be creating two “projects”: the API Server, and the Front-end Client. Let’s begin by creating the API server first.

On your web server’s folder, create a folder named simpletodo_api, and create an index.php file. This index.php file will act as a front controller for the API, so all requests to the API server will be made through this file. Open it up and put the following code inside:



<?php
// Define path to data folder
define('DATA_PATH', realpath(dirname(__FILE__).'/data'));

//include our models
include_once 'models/TodoItem.php';

//wrap the whole thing in a try-catch block to catch any wayward exceptions!
try {
 //get all of the parameters in the POST/GET request
 $params = $_REQUEST;

 //get the controller and format it correctly so the first
 //letter is always capitalized
 $controller = ucfirst(strtolower($params['controller']));

 //get the action and format it correctly so all the
 //letters are not capitalized, and append 'Action'
 $action = strtolower($params['action']).'Action';

 //check if the controller exists. if not, throw an exception
 if( file_exists("controllers/{$controller}.php") ) {
  include_once "controllers/{$controller}.php";
 } else {
  throw new Exception('Controller is invalid.');
 }

 //create a new instance of the controller, and pass
 //it the parameters from the request
 $controller = new $controller($params);

 //check if the action exists in the controller. if not, throw an exception.
 if( method_exists($controller, $action) === false ) {
  throw new Exception('Action is invalid.');
 }

 //execute the action
 $result['data'] = $controller->$action();
 $result['success'] = true;

} catch( Exception $e ) {
 //catch any exceptions and report the problem
 $result = array();
 $result['success'] = false;
 $result['errormsg'] = $e->getMessage();
}

//echo the result of the API call
echo json_encode($result);
exit();


What we’ve essentially built here is a simple front controller that does the following:




• Accept an API call with any number of parameters


• Extract the Controller and Action for the API call


• Make the necessary checks to ensure that the Controller and Action exist


• Execute the API call


• Catch errors, if any


• Send back a result to the caller

Besides the index.php file, create three folders: a controllers, models and data folder.








• The controllers folder will contain all the controllers we’ll be using for the API server. We’ll be building it using the MVC architecture to make the structure of the API server cleaner and more organized.


• The models folder will contain all the data models for the API server.


• The data folder will be where the API server saves any data

Go into the controllers folder and create a file called Todo.php. This will be our controller for any TODO list related tasks. With the functions we’ll be needing for our TODO application in mind, create the necessary methods for the Todo controller:



<?php
class Todo
{
 private $_params;

 public function __construct($params)
 {
  $this->_params = $params;
 }

 public function createAction()
 {
  //create a new todo item
 }

 public function readAction()
 {
  //read all the todo items
 }

 public function updateAction()
 {
  //update a todo item
 }

 public function deleteAction()
 {
  //delete a todo item
 }
}


Now, add the necessary functionality to each action. I’ll provide the code for the createAction method and I’ll leave it up to you to create the code for the other methods. If you’re not in the mood though, you can just download the source code for the demo and copy it from there.



public function createAction()
{
 //create a new todo item
 $todo = new TodoItem();
 $todo->title = $this->_params['title'];
 $todo->description = $this->_params['description'];
 $todo->due_date = $this->_params['due_date'];
 $todo->is_done = 'false';

 //pass the user's username and password to authenticate the user
 $todo->save($this->_params['username'], $this->_params['userpass']);

 //return the todo item in array format
 return $todo->toArray();
}


Create TodoItem.php inside the models folder so we can create the “item creation” code. Take note that I won’t be connecting to a database, rather, I’ll be saving the information into files. It should be relatively easy though to make this work with any database.



<?php
class TodoItem
{
 public $todo_id;
 public $title;
 public $description;
 public $due_date;
 public $is_done;

 public function save($username, $userpass)
 {
  //get the username/password hash
  $userhash = sha1("{$username}_{$userpass}");
  if( is_dir(DATA_PATH."/{$userhash}") === false ) {
   mkdir(DATA_PATH."/{$userhash}");
  }

  //if the $todo_id isn't set yet, it means we need to create a new todo item
  if( is_null($this->todo_id) || !is_numeric($this->todo_id) ) {
   //the todo id is the current time
   $this->todo_id = time();
  }

  //get the array version of this todo item
  $todo_item_array = $this->toArray();

  //save the serialized array version into a file
  $success = file_put_contents(DATA_PATH."/{$userhash}/{$this->todo_id}.txt", serialize($todo_item_array));

  //if saving was not successful, throw an exception
  if( $success === false ) {
   throw new Exception('Failed to save todo item');
  }

  //return the array version
  return $todo_item_array;
 }

 public function toArray()
 {
  //return an array version of the todo item
  return array(
   'todo_id' => $this->todo_id,
   'title' => $this->title,
   'description' => $this->description,
   'due_date' => $this->due_date,
   'is_done' => $this->is_done
  );
 }
}


The createAction method calls two functions on the TodoItem model:




• save() – this saves the TodoItem into a file, as well as set the todo_id for the TodoItem if necessary


• toArray() – this returns an array version of the TodoItem, where the variables are the array’s indexes

Since the API is called via HTTP requests, let’s test that API call by calling it through the browser:

http://localhost/simpletodo_api/?controller=todo&action=create&title=test%20title&description=test%20description&due_date=12/08/2011&username=nikko&userpass=test1234

If everything worked, you should see a new folder inside the data folder, and inside that folder, you should see a file with the following content:







createAction() result

Congratulations! You’ve successfully created an API server and made an API call!



---




Step 3: Secure the API Server with an APP ID and APP SECRET


Currently, the API server is set to accept ALL API requests. We’ll need to limit it to our own applications only, to ensure that only our own front-end clients are able to make API requests. Alternatively, you can actually create a system wherein users can create their own applications that have access to your API server, similar to how Facebook and Twitter applications work.

Begin by creating a set of id-key pairs for the clients that will be using the API server. Since this is just a demo, we can use any random, 32 character string. For the APP ID, let’s say it’s application APP001.

Open the index.php file again, and then update it with the following code:



<?php
// Define path to data folder
define('DATA_PATH', realpath(dirname(__FILE__).'/data'));

//Define our id-key pairs
$applications = array(
 'APP001' => '28e336ac6c9423d946ba02d19c6a2632', //randomly generated app key
);
//include our models
include_once 'models/TodoItem.php';

//wrap the whole thing in a try-catch block to catch any wayward exceptions!
try {
 //*UPDATED*
 //get the encrypted request
 $enc_request = $_REQUEST['enc_request'];

 //get the provided app id
 $app_id = $_REQUEST['app_id'];

 //check first if the app id exists in the list of applications
 if( !isset($applications[$app_id]) ) {
  throw new Exception('Application does not exist!');
 }

 //decrypt the request
 $params = json_decode(trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $applications[$app_id], base64_decode($enc_request), MCRYPT_MODE_ECB)));

 //check if the request is valid by checking if it's an array and looking for the controller and action
 if( $params == false || isset($params->controller) == false || isset($params->action) == false ) {
  throw new Exception('Request is not valid');
 }

 //cast it into an array
 $params = (array) $params;
 ...
 ...
 ...


What we’ve done here is actually implement a very simple way of authenticating our front-end clients using a system similar to public-private key authentication. Basically, here is the step-by-step breakdown of how the authentication happens:







Public-key encryption




• an API call is made, in it an $app_id and $enc_request is provided.


• the $enc_request value is the API call parameters, encrypted using APP KEY. The APP KEY is NEVER sent to the server, it’s only used to hash the request. Additionally, the request can only be decrypted using the APP KEY.


• once the API call arrives to the API server, it will check its own list of applications for the APP ID provided


• when found, the API server attempt to decrypt the request using the key that matches the APP ID sent


• if it was successful in decrypting it, then continue on with the program

Now that the API server is secured with an APP ID and APP SECRET, we can begin programming a front-end client to use the API server.



---




Step 4: Create the Browser Front-end Client


We’ll begin by setting up a new folder for the front-end client. Create a folder called simpletodo_client_browser on your web server’s folder. When that’s done, create an index.php file and put this code inside:



<!DOCTYPE html>
<html>
<head>
 <title>SimpleTODO</title>

 <link rel="stylesheet" href="css/reset.css" type="text/css" />
 <link rel="stylesheet" href="css/bootstrap.min.css" type="text/css" />

 <script src="js/jquery.min.js"></script>
 <script src="js/jquery-ui-1.8.16.custom.min.js"></script>

 <style>
 body {
  padding-top: 40px;
 }
 #main {
  margin-top: 80px;
  text-align: center;
 }
 </style>
</head>
<body>
 <div class="topbar">
  <div class="fill">
   <div class="container">
    <a class="brand" href="index.php">SimpleTODO</a>
   </div>
  </div>
 </div>
 <div id="main" class="container">
  <form class="form-stacked" method="POST" action="login.php">
   <div class="row">
    <div class="span5 offset5">
     <label for="login_username">Username:</label>
     <input type="text" id="login_username" name="login_username" placeholder="username" />

     <label for="login_password">Password:</label>
     <input type="password" id="login_password" name="login_password" placeholder="password" />

    </div>
   </div>
   <div class="actions">
    <button type="submit" name="login_submit" class="btn primary large">Login or Register</button>
   </div>
  </form>
 </div>
</body>
</html>


That should look something like this:







SimpleTODO Login Page

Take note that I’ve included 2 JavaScript files and 2 CSS files here:




• reset.css is your standard CSS reset script. I use the meyerweb.com css reset.


• bootstrap.min.css is the Twitter Bootstrap


• jquery.min.js is the latest jQuery library


• jquery-ui-1.8.16.custom.min.js is the latest jQuery UI library

Next, let’s create the login.php file so we store the username and password inside a session on the client.



<?php
//get the form values
$username = $_POST['login_username'];
$userpass = $_POST['login_password'];

session_start();
$_SESSION['username'] = $username;
$_SESSION['userpass'] = $userpass;
header('Location: todo.php');
exit();


Here, we simply start a session for the user, based on the username and password combination the user will provide. This acts as a simple combination key, which will allow a user to access stored TODO items for a specific combination of both the username and password. We then redirect to todo.php, where we start interacting with the API server. Before we start coding the todo.php file though, let’s first create an ApiCaller class, which will encapsulate all the API calling methods we’ll need, including encrypting the requests.

Create apicaller.php and put the following inside:



<?php
class ApiCaller
{
 //some variables for the object
 private $_app_id;
 private $_app_key;
 private $_api_url;

 //construct an ApiCaller object, taking an
 //APP ID, APP KEY and API URL parameter
 public function __construct($app_id, $app_key, $api_url)
 {
  $this->_app_id = $app_id;
  $this->_app_key = $app_key;
  $this->_api_url = $api_url;
 }

 //send the request to the API server
 //also encrypts the request, then checks
 //if the results are valid
 public function sendRequest($request_params)
 {
  //encrypt the request parameters
  $enc_request = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $this->_app_key, json_encode($request_params), MCRYPT_MODE_ECB));

  //create the params array, which will
  //be the POST parameters
  $params = array();
  $params['enc_request'] = $enc_request;
  $params['app_id'] = $this->_app_id;

  //initialize and setup the curl handler
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $this->_api_url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_POST, count($params));
  curl_setopt($ch, CURLOPT_POSTFIELDS, $params);

  //execute the request
  $result = curl_exec($ch);

  //json_decode the result
  $result = @json_decode($result);

  //check if we're able to json_decode the result correctly
  if( $result == false || isset($result['success']) == false ) {
   throw new Exception('Request was not correct');
  }

  //if there was an error in the request, throw an exception
  if( $result['success'] == false ) {
   throw new Exception($result['errormsg']);
  }

  //if everything went great, return the data
  return $result['data'];
 }
}


We’ll be using the ApiCaller class to send requests to our API server. This way, all the necessary encryption and cURL initialization code will be in one place, and we won’t have to repeat our code.




• 
  the __construct function takes in three parameters:
  
  
  
  1. $app_id – the APP ID for the client (which is APP001 for the browser client)
  
  
  2. $app_key – the APP KEY for the client (which is 28e336ac6c9423d946ba02d19c6a2632 for the browser client)
  
  
  3. $api_url – the URL of the API server, which is http://localhost/simpletodo_api/


• 
  the sendRequest() function:
  
  
  
  1. encrypts the request parameters using the mcrypt library in the same manner that the API server decrypts it
  
  
  2. generates the $_POST parameters to be sent to the API server
  
  
  3. executes the API call via cURL
  
  
  4. checks the result of the API call was successful or not
  
  
  5. returns the data when everything went according to plan

Now, let’s begin with the todo.php page. First off, let’s create some code to retrieve the current list of todo items for the user nikko with the password test1234 (this is the user/password combination we used earlier to test the API server).



<?php
session_start();
include_once 'apicaller.php';

$apicaller = new ApiCaller('APP001', '28e336ac6c9423d946ba02d19c6a2632', 'http://localhost/simpletodo_api/');

$todo_items = $apicaller->sendRequest(array(
 'controller' => 'todo',
 'action' => 'read',
 'username' => $_SESSION['username'],
 'userpass' => $_SESSION['userpass']
));

echo '';
var_dump($todo_items);


Go to the index.php page, login as nikko/test1234, and you should see a var_dump() of the TODO item we created earlier.





Congratulations, you’ve successfully made an API call to the API server! In this code, we’ve:




• started the session so we have access to the username and userpass in the $_SESSION


• instantiated a new ApiCaller class, giving it the APP ID, APP KEY and the URL of the API server


• send a request via the sendRequest() method

Now, let’s reformat the data so it looks better. Add the following HTML to the todo.php code. Don’t forget to remove the var_dump()!



<!DOCTYPE html>
<html>
<head>
 <title>SimpleTODO</title>

 <link rel="stylesheet" href="css/reset.css" type="text/css" />
 <link rel="stylesheet" href="css/bootstrap.min.css" type="text/css" />
 <link rel="stylesheet" href="css/flick/jquery-ui-1.8.16.custom.css" type="text/css" />

 <script src="js/jquery.min.js"></script>
 <script src="js/jquery-ui-1.8.16.custom.min.js"></script>

 <style>
 body {
  padding-top: 40px;
 }
 #main {
  margin-top: 80px;
 }

 .textalignright {
  text-align: right;
 }

 .marginbottom10 {
  margin-bottom: 10px;
 }
 #newtodo_window {
  text-align: left;
  display: none;
 }
 </style>

 <script>
 $(document).ready(function() {
  $("#todolist").accordion({
   collapsible: true
  });
  $(".datepicker").datepicker();
  $('#newtodo_window').dialog({
   autoOpen: false,
   height: 'auto',
   width: 'auto',
   modal: true
  });
  $('#newtodo').click(function() {
   $('#newtodo_window').dialog('open');
  });
 });
 </script>
</head>
<body>
 <div class="topbar">
  <div class="fill">
   <div class="container">
    <a class="brand" href="index.php">SimpleTODO</a>
   </div>
  </div>
 </div>
 <div id="main" class="container">
  <div class="textalignright marginbottom10">
   <span id="newtodo" class="btn info">Create a new TODO item</span>
   <div id="newtodo_window" title="Create a new TODO item">
    <form method="POST" action="new_todo.php">
     <p>Title:<br /><input type="text" class="title" name="title" placeholder="TODO title" /></p>
     <p>Date Due:<br /><input type="text" class="datepicker" name="due_date" placeholder="MM/DD/YYYY" /></p>
     <p>Description:<br /><textarea class="description" name="description"></textarea></p>
     <div class="actions">
      <input type="submit" value="Create" name="new_submit" class="btn primary" />
     </div>
    </form>
   </div>
  </div>
  <div id="todolist">
   <?php foreach($todo_items as $todo): ?>
   <h3><a href="#"><?php echo $todo->title; ?></a></h3>
   <div>
    <form method="POST" action="update_todo.php">
    <div class="textalignright">
     <a href="delete_todo.php?todo_id=<?php echo $todo->todo_id; ?>">Delete</a>
    </div>
    <div>
     <p>Date Due:<br /><input type="text" id="datepicker_<?php echo $todo->todo_id; ?>" class="datepicker" name="due_date" value="12/09/2011" /></p>
     <p>Description:<br /><textarea class="span8" id="description_<?php echo $todo->todo_id; ?>" class="description" name="description"><?php echo $todo->description; ?></textarea></p>
    </div>
    <div class="textalignright">
     <?php if( $todo->is_done == 'false' ): ?>
     <input type="hidden" value="false" name="is_done" />
     <input type="submit" class="btn" value="Mark as Done?" name="markasdone_button" />
     <?php else: ?>
     <input type="hidden" value="true" name="is_done" />
     <input type="button" class="btn success" value="Done!" name="done_button" />
     <?php endif; ?>
     <input type="hidden" value="<?php echo $todo->todo_id; ?>" name="todo_id" />
     <input type="hidden" value="<?php echo $todo->title; ?>" name="title" />
     <input type="submit" class="btn primary" value="Save Changes" name="update_button" />
    </div>
    </form>
   </div>
   <?php endforeach; ?>
  </div>
 </div>
</body>
</html>


It should now look something like this:





Pretty cool huh? But this currently does nothing, so let’s begin adding some functionality. I’ll provide the code for new_todo.php, which will call the todo/create API call to create a new TODO item. Creating the other pages (update_todo.php and delete_todo.php) should be very similar to this one, so I’ll leave it up to you to create those. Open up new_todo.php and add the following code:



<?php
session_start();
include_once 'apicaller.php';

$apicaller = new ApiCaller('APP001', '28e336ac6c9423d946ba02d19c6a2632', 'http://localhost/simpletodo_api/');

$new_item = $apicaller->sendRequest(array(
 'controller' => 'todo',
 'action' => 'create',
 'title' => $_POST['title'],
 'due_date' => $_POST['due_date'],
 'description' => $_POST['description'],
 'username' => $_SESSION['username'],
 'userpass' => $_SESSION['userpass']
));

header('Location: todo.php');
exit();
?>


As you can see, the new_todo.php page uses the ApiCaller again to facilitate the sending the todo/create request to the API server. This basically does the same thing as before:




• start a session so it has access to the $username and $userpass saved in the $_SESSION


• instantiate a new ApiCaller class, giving it the APP ID, APP KEY and the URL of the API server


• send the request via the sendRequest() method


• redirect back to todo.php





Congratulations, it works! You’ve successfully created an API-centric application!



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Conclusion


There are so many advantages to developing an application that’s built around an API. Want to create an Android application version of SimpleTODO? All the functionality you would need is already in the API server, so all you need to do is just create the client! Want to refactor or optimize some of the classes? No problem — just make sure the output is the same. Need to add more functionality? You can do it wihtout affecting any of the client’s code!

Though there are some disadvantages like longer development times or more complexity, the advantages of developing a web application in this manner greatly outweight the disadvantages. It’s up to us to leverage on this kind of development today so we can reap the benefits later on.

Are you planning to use an API server for your next web application, or have you already used the same technique for a project in the past? Let me know in the comments!

11 Essential Reads for Photographers for the New Year

11 Essential Reads for Photographers for the New Year:
At this time of year I talk to a lot of photographers who are lacking a little motivation, inspiration and creativity.

It’s been a big year so today in our ‘best of 2011 series‘ I’m featuring 11 tutorials that were written this year on dPS that I think might help you to kickstart yourself photographically for 2012.

• 3 Stupidly Simple Reasons why Most People’s Photography Does Not Improve


• A Simple Exercise to Train Your Photographic Eye


• How to Take Photos that Stand out from the Crowd


• 5 Ways to Stop Being a Luck Photographer and Start Taking Pictures on Purpose


• 3 Workouts to Improve Your Photography


• What Separates Great Photographers from Good Ones?


• 5 Ideas to Kick Start Your Photography Again


• 5 Key Skills for the Modern Photographer


• 10 Ways to Develop Yourself Photographically


• 10 Things I learnt from Daily Shooting


• 6 Ways to Enhance Your Creativity

Post originally from: Digital Photography Tips.



Check out our more Photography Tips at Photography Tips for Beginners, Portrait Photography Tips and Wedding Photography Tips.

11 Essential Reads for Photographers for the New Year

10 New Year’s Resolutions Every Web Developer Should Make

10 New Year’s Resolutions Every Web Developer Should Make:
In less than a week, we’ll be in 2012. I know it’s a cliché, but where has the year gone? Naturally, we’re now at the time of year when folks set goals for the new year. While you might have some goals for your “real” life, how about a few resolutions for your developer life?

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1 - Learn a New Language, Framework, Or Methodology

We must continue learning about the latest technologies.

About the only constant when it comes to developing for the web is change. Take NodeJS, for example: two or three years ago, it didn’t exist, and there was very little (if any) JavaScript being done on the server. Now, you can’t get away from it. Every web developer wants to stay on top of their game. To do so, we must continue learning about the latest technologies. If you’re a back-end dev, that could mean learning JavaScript and Node.js. It could mean taking up Ruby and Rails. For the front-end developer, that could mean really grokking CSS3, or understanding the new HTML5 APIs. Of course, that doesn’t mean you have to use it regularly; just keep yourself learning.

Along the same lines, now is as good a time as ever to re-evaluate your workflow, and learn better and different tools to get the job done more quickly.

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2 - Get Better At What You Know

Set aside some time to also focus on existing languages and software.

Of course, staying sharp means more than learning new things. It also refers to improving in your use of your daily tools. I know I’ve been guilty of sticking with the patterns and methods that I’m comfortable with, and not learning new ones that might be better for a given situation. How knowledgeable are you about JavaScript design patterns? Do you have a solid understanding of object-oriented and functional programming in PHP? Have you used SQL joins? Are there any features your text editor offers that you aren’t using? These aren’t new technologies, but, if you aren’t using them, they’re new to you! Set aside some time to also focus on existing languages and software.

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3 - Explore a New Field

This resolution is a different twist on the first one. Learning a new language, framework, or methodology in your own field is great, and might even be useful to your daily practice. But if you’re like me, you’re fascinated with every part of the web. Try exploring new fields. Back-end devs: look into front-end development. Front-ends, explore usability or user experience more than you have before. If you enjoy writing, you might be interested in content strategy, or fostering that design flare. There are dozens of fields on the web; explore!

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4 - Engage the Community

Call it engaging, call it networking, call it whatever your want.

The web is a pretty incredible place: I can’t think of any other phenomenon that has ever made such strong friendships between people so far apart. In 2012, why don’t you try to engage this group of amazing people a bit more? Talk to them on Twitter; read their blog posts and comment or write your own articles in response; contribute to their code via Github, or another code-sharing site. Or, go to meet-ups, user groups and conferences. Call it engaging, call it networking, call it whatever your want; but one thing’s for sure: it will (in most cases) benefit both you and the other person. In addition to building great personal relationships, you’ll likely gain new referrals!

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5 - Teach Others

The most beneficial comments are the ones that hurt your feelings.

Going hand-in-hand with our previous point, you should resolve to teach others more in 2012. Why? Well, how does it go, “Teaching something is the best way to learn it”? I’ve been writing for Nettuts+ for close to three years, and I can attest that that statement is completely true. Writing down exactly how a concept works forces you to understand it completely; you’ll be surprised how much you’ll learn about your topic when you try to teach it. On top of that, there’s the incredible feeling you get when you know that you’ve helped someone learn a new skill set.

Undoubtedly, you’ll face a few trolls, pointing out legitimate mistakes ( or just making stabby comments). Not to worry (too much); teaching is a learning process, and you’ll improve the more you do it. The most beneficial comments are the ones that hurt your feelings.

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6 - Take Better Care Of Yourself

We are the martyrs of the web.

We web developers seem to pride ourselves on our dedication to our craft. We’ll work long hours, hunched over a computer in the dark, so absorbed in our work that we forget to shower or eat. We are the martyrs of the web, suffering to make the internet a better place.

Sounds heroic, but it really isn’t.

At the risk of mommying you, I’m going to suggest that you take care of yourself in 2012. Besides sleeping and eating well, make sure your workplace is ergonomic. It stands to reason that, if you spend a third of your life in your office, it might make sense to make it as comfortable as possible!

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7 - Manage Your Time (and Other Resources) Better

Over 1 trillion videos were watched on Youtube this past year.

Perhaps this isn’t specificly related to web developers, but it is, nonetheless, something that almost every “knowledge worker” can afford to get better at. For a lot of us—especially freelancers—what you’re doing with your time could be the difference between feasting and fasting. Remember all those fun, new web technologies I recommended you learn about? Well, don’t let their lure limit your bacon-bringing hours to few and far between. Of coures, the internet at large can be just as much of a distraction. I’m sure you saw this recently; it gave pause when I did:

Assuming that the average YouTube video is 2 – 3 minutes long, we’re looking at something to the tune of one whole day. Something tells me I’m not much better off for it.

Of course, “all work, no play” and all that, right? I’m not suggesting you be a slave to your clients, or an unbearably dull workaholic. I’m merely stating that we would all be wise to track exactly where our hours are going and make an effort to use them a little better.

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8 - Use Better Programming Practices

I don’t think you’ll ever have an issue with over-documentation.

No, I’m not repeating resolution two in different words. This time, I’m talking about the practices that surround the actual coding itself. I can’t tell you how many times I’ve eagerly started a new project, and—half an hour later—said, “Hmmm . . . I should create a branch to try this feature. Oh, wait, I forgot to initialize Git when I started . . .” Making sure I remember to use code versioning from the beginning is something I’m going to be working on in 2012; it keeps your project history so much cleaner.

Another meta-coding practice I usually neglect (to my detriment) is commenting. I’ll conjure up a few clever lines of code, and be tickled for the rest of the day. Next week, I’ll return and spend twenty minutes trying to figure out what it does. This plagues you too? Do yourself a favor and leave useful comments to yourself, and others. Documentation is right along the same lines as commenting. When I was recently learning Dojo, I found its in-code documentation to be invaluable. Of course, the level of documentation will depend on the publicity of your project, but I don’t think you’ll ever have an issue with over-documentation.

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9 - Generate Passive Income

I’m guessing that most of the Nettuts+ audience performs client work, either as a freelancer or otherwise. Well why not make some passive income on the side? Envato has ten (count `em!) marketplaces where anyone with the right skills can profit. Build a theme for Themeforest, write a script for CodeCanyon, the possibilities are close to endless. Of course, if your skills don’t trade on the Envato marketplaces—or even if they do—there are bunches of other ways to make passive income. If you’re a writer, for example, check out Tuts+ Premium. They’re always looking for new passionate teachers.

The manager of Tuts+ Premium, Skellie, recently opened the Passive Income Author blog, where you’ll find great information on self-publishing.

Selling items on a marketplace or personal website is a brilliant way to passively make some extra cash while still doing exactly what you enjoy.

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10 - Take a Break

Photo by brettanicus

Put on a completely different hat… sometimes


So far, every resolution has been something you can do to improve your craft as a developer. I’ll close by noting that one of the best things you can do to become a better developer is to not be a developer . . . sometimes. Put on a completely different hat… sometimes. Keep another hobby that’s not even tangentially related to development, and, preferably, doesn’t involve computers. Some play an instrument, some read, some write, some cook. Whatever you do, set aside some get-away time. When you do so, you’ll find that solutions to programming problems often show up on during time off.

Certainly, regular breaks are important, but so are those longer, couple-times-a-year vacation / holiday breaks. Throw a few of those in your annual schedule as well!

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Your Resolutions?

Well, that’s my list of ten resolutions all web developers should make. Have any of your own that aren’t on my list? Let’s hear them in the comments!

Half of the glass is...

Half of the glass is...:



Submitted by: ozgurr

Posted at: 2011-12-23 00:52:22

See full post and comment: http://9gag.com/gag/1213187

ISO Updates C Standard

ISO Updates C Standard:



An anonymous reader writes "The International Organization for Standardization (ISO) has published the new specifications for the C programming language. The standard is known unofficially as C1X and was published officially as ISO/IEC 9899:2011. It provides greater compatibility with the C++ language and adds new features to C (as indicated in the draft)."



Read more of this story at Slashdot.