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  • The Breakpoint Ep 3: The Sourcemap Spectacular with Paul Irish and Addy Osmani

    The Breakpoint Ep 3: The Sourcemap Spectacular with Paul Irish and Addy Osmani Ask and vote for questions at goo.gl Take Coffeescript to Javascript to Minified and all the way back with source maps. In addition to a new Coffeescript sourcemap workflow, we'll cover the latest sourcemap updates so you can understand how to dramatically improve your debugging experience. Finally, Paul and Addy will be joined by special guest—Yeoman core contributor Sindre Sorhus—to discuss what big new changes are coming to the project. From: GoogleDevelopers Views: 0 0 ratings Time: 01:00:00 More in Science & Technology

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  • Google+ Platform Office Hours for March 7th 2012: REST API Overview

    Google+ Platform Office Hours for March 7th 2012: REST API Overview We hold weekly Google+ Platform Office Hours using Hangouts On Air most Wednesdays from 11:30 am until 12:15 pm PST. This week we took a step back and looked at the Google+ platform's REST APIs. We explain what they're capable of and show you how to get started using them. Discuss this video on Google+: goo.gl Learn more about our Office Hours: developers.google.com From: GoogleDevelopers Views: 3299 44 ratings Time: 31:45 More in Science & Technology

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  • A Brief Discussion On Visual Studio 2010 Top Features

    In this article I will describe about some new features of Visual Studio 2010 which I explored till now. These features are really very useful in terms of productive development. This article is mainly targeted for beginners of Visual Studio 2010 but everybody can get benefit on the same.

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  • Converting a generic list into JSON string and then handling it in java script

    - by Jalpesh P. Vadgama
    We all know that JSON (JavaScript Object Notification) is very useful in case of manipulating string on client side with java script and its performance is very good over browsers so let’s create a simple example where convert a Generic List then we will convert this list into JSON string and then we will call this web service from java script and will handle in java script. To do this we need a info class(Type) and for that class we are going to create generic list. Here is code for that I have created simple class with two properties UserId and UserName public class UserInfo { public int UserId { get; set; } public string UserName { get; set; } } Now Let’s create a web service and web method will create a class and then we will convert this with in JSON string with JavaScriptSerializer class. Here is web service class. using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Services; namespace Experiment.WebService { /// <summary> /// Summary description for WsApplicationUser /// </summary> [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. [System.Web.Script.Services.ScriptService] public class WsApplicationUser : System.Web.Services.WebService { [WebMethod] public string GetUserList() { List<UserInfo> userList = new List<UserInfo>(); for (int i = 1; i <= 5; i++) { UserInfo userInfo = new UserInfo(); userInfo.UserId = i; userInfo.UserName = string.Format("{0}{1}", "J", i.ToString()); userList.Add(userInfo); } System.Web.Script.Serialization.JavaScriptSerializer jSearializer = new System.Web.Script.Serialization.JavaScriptSerializer(); return jSearializer.Serialize(userList); } } } Note: Here you must have this attribute here in web service class ‘[System.Web.Script.Services.ScriptService]’ as this attribute will enable web service to call from client side. Now we have created a web service class let’s create a java script function ‘GetUserList’ which will call web service from JavaScript like following function GetUserList() { Experiment.WebService.WsApplicationUser.GetUserList(ReuqestCompleteCallback, RequestFailedCallback); } After as you can see we have inserted two call back function ReuqestCompleteCallback and RequestFailedCallback which handle errors and result from web service. ReuqestCompleteCallback will handle result of web service and if and error comes then RequestFailedCallback will print the error. Following is code for both function. function ReuqestCompleteCallback(result) { result = eval(result); var divResult = document.getElementById("divUserList"); CreateUserListTable(result); } function RequestFailedCallback(error) { var stackTrace = error.get_stackTrace(); var message = error.get_message(); var statusCode = error.get_statusCode(); var exceptionType = error.get_exceptionType(); var timedout = error.get_timedOut(); // Display the error. var divResult = document.getElementById("divUserList"); divResult.innerHTML = "Stack Trace: " + stackTrace + "<br/>" + "Service Error: " + message + "<br/>" + "Status Code: " + statusCode + "<br/>" + "Exception Type: " + exceptionType + "<br/>" + "Timedout: " + timedout; } Here in above there is a function called you can see that we have use ‘eval’ function which parse string in enumerable form. Then we are calling a function call ‘CreateUserListTable’ which will create a table string and paste string in the a div. Here is code for that function. function CreateUserListTable(userList) { var tablestring = '<table ><tr><td>UsreID</td><td>UserName</td></tr>'; for (var i = 0, len = userList.length; i < len; ++i) { tablestring=tablestring + "<tr>"; tablestring=tablestring + "<td>" + userList[i].UserId + "</td>"; tablestring=tablestring + "<td>" + userList[i].UserName + "</td>"; tablestring=tablestring + "</tr>"; } tablestring = tablestring + "</table>"; var divResult = document.getElementById("divUserList"); divResult.innerHTML = tablestring; } Now let’s create div which will have all html that is generated from this function. Here is code of my web page. We also need to add a script reference to enable web service from client side. Here is all HTML code we have. <form id="form1" runat="server"> <asp:ScriptManager ID="myScirptManger" runat="Server"> <Services> <asp:ServiceReference Path="~/WebService/WsApplicationUser.asmx" /> </Services> </asp:ScriptManager> <div id="divUserList"> </div> </form> Now as we have not defined where we are going to call ‘GetUserList’ function so let’s call this function on windows onload event of javascript like following. window.onload=GetUserList(); That’s it. Now let’s run it on browser to see whether it’s work or not and here is the output in browser as expected. That’s it. This was very basic example but you can crate your own JavaScript enabled grid from this and you can see possibilities are unlimited here. Stay tuned for more.. Happy programming.. Technorati Tags: JSON,Javascript,ASP.NET,WebService

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  • DIY Weather-Aware Umbrella Stand Signals Stormy Weather

    - by Jason Fitzpatrick
    This clever DIY project adds ambient weather notification to your umbrella stand–simply walk by it on your way out the door to get a subtle reminder to take your umbrella. The clever setup involves a hobby board, motion detection, and LEDS to a rather clever end. As you walk by the semi-translucent umbrella stand all of it is mounted in, it lights up to indicate the weather conditions. Blue indicates the forecast for the day shows no sign of rain, green indicates rain, and red indicates thunderstorms. Check out the above video to see the hardware involves and the stand in action; hit up the link below for the full build guide including code. DIY Umbrella Stand Hack with Rain Alert [via Make] How To Delete, Move, or Rename Locked Files in Windows HTG Explains: Why Screen Savers Are No Longer Necessary 6 Ways Windows 8 Is More Secure Than Windows 7

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  • DTracing a PHPUnit Test: Looking at Functional Programming

    - by cj
    Here's a quick example of using DTrace Dynamic Tracing to work out what a PHP code base does. I was reading the article Functional Programming in PHP by Patkos Csaba and wondering how efficient this stype of programming is. I thought this would be a good time to fire up DTrace and see what is going on. Since DTrace is "always available" even in production machines (once PHP is compiled with --enable-dtrace), this was easy to do. I have Oracle Linux with the UEK3 kernel and PHP 5.5 with DTrace static probes enabled, as described in DTrace PHP Using Oracle Linux 'playground' Pre-Built Packages I installed the Functional Programming sample code and Sebastian Bergmann's PHPUnit. Although PHPUnit is included in the Functional Programming example, I found it easier to separately download and use its phar file: cd ~/Desktop wget -O master.zip https://github.com/tutsplus/functional-programming-in-php/archive/master.zip wget https://phar.phpunit.de/phpunit.phar unzip master.zip I created a DTrace D script functree.d: #pragma D option quiet self int indent; BEGIN { topfunc = $1; } php$target:::function-entry /copyinstr(arg0) == topfunc/ { self->follow = 1; } php$target:::function-entry /self->follow/ { self->indent += 2; printf("%*s %s%s%s\n", self->indent, "->", arg3?copyinstr(arg3):"", arg4?copyinstr(arg4):"", copyinstr(arg0)); } php$target:::function-return /self->follow/ { printf("%*s %s%s%s\n", self->indent, "<-", arg3?copyinstr(arg3):"", arg4?copyinstr(arg4):"", copyinstr(arg0)); self->indent -= 2; } php$target:::function-return /copyinstr(arg0) == topfunc/ { self->follow = 0; } This prints a PHP script function call tree starting from a given PHP function name. This name is passed as a parameter to DTrace, and assigned to the variable topfunc when the DTrace script starts. With this D script, choose a PHP function that isn't recursive, or modify the script to set self->follow = 0 only when all calls to that function have unwound. From looking at the sample FunSets.php code and its PHPUnit test driver FunSetsTest.php, I settled on one test function to trace: function testUnionContainsAllElements() { ... } I invoked DTrace to trace function calls invoked by this test with # dtrace -s ./functree.d -c 'php phpunit.phar \ /home/cjones/Desktop/functional-programming-in-php-master/FunSets/Tests/FunSetsTest.php' \ '"testUnionContainsAllElements"' The core of this command is a call to PHP to run PHPUnit on the FunSetsTest.php script. Outside that, DTrace is called and the PID of PHP is passed to the D script $target variable so the probes fire just for this invocation of PHP. Note the quoting around the PHP function name passed to DTrace. The parameter must have double quotes included so DTrace knows it is a string. The output is: PHPUnit 3.7.28 by Sebastian Bergmann. ......-> FunSetsTest::testUnionContainsAllElements -> FunSets::singletonSet <- FunSets::singletonSet -> FunSets::singletonSet <- FunSets::singletonSet -> FunSets::union <- FunSets::union -> FunSets::contains -> FunSets::{closure} -> FunSets::contains -> FunSets::{closure} <- FunSets::{closure} <- FunSets::contains <- FunSets::{closure} <- FunSets::contains -> PHPUnit_Framework_Assert::assertTrue -> PHPUnit_Framework_Assert::isTrue <- PHPUnit_Framework_Assert::isTrue -> PHPUnit_Framework_Assert::assertThat -> PHPUnit_Framework_Constraint::count <- PHPUnit_Framework_Constraint::count -> PHPUnit_Framework_Constraint::evaluate -> PHPUnit_Framework_Constraint_IsTrue::matches <- PHPUnit_Framework_Constraint_IsTrue::matches <- PHPUnit_Framework_Constraint::evaluate <- PHPUnit_Framework_Assert::assertThat <- PHPUnit_Framework_Assert::assertTrue -> FunSets::contains -> FunSets::{closure} -> FunSets::contains -> FunSets::{closure} <- FunSets::{closure} <- FunSets::contains -> FunSets::contains -> FunSets::{closure} <- FunSets::{closure} <- FunSets::contains <- FunSets::{closure} <- FunSets::contains -> PHPUnit_Framework_Assert::assertTrue -> PHPUnit_Framework_Assert::isTrue <- PHPUnit_Framework_Assert::isTrue -> PHPUnit_Framework_Assert::assertThat -> PHPUnit_Framework_Constraint::count <- PHPUnit_Framework_Constraint::count -> PHPUnit_Framework_Constraint::evaluate -> PHPUnit_Framework_Constraint_IsTrue::matches <- PHPUnit_Framework_Constraint_IsTrue::matches <- PHPUnit_Framework_Constraint::evaluate <- PHPUnit_Framework_Assert::assertThat <- PHPUnit_Framework_Assert::assertTrue -> FunSets::contains -> FunSets::{closure} -> FunSets::contains -> FunSets::{closure} <- FunSets::{closure} <- FunSets::contains -> FunSets::contains -> FunSets::{closure} <- FunSets::{closure} <- FunSets::contains <- FunSets::{closure} <- FunSets::contains -> PHPUnit_Framework_Assert::assertFalse -> PHPUnit_Framework_Assert::isFalse -> {closure} -> main <- main <- {closure} <- PHPUnit_Framework_Assert::isFalse -> PHPUnit_Framework_Assert::assertThat -> PHPUnit_Framework_Constraint::count <- PHPUnit_Framework_Constraint::count -> PHPUnit_Framework_Constraint::evaluate -> PHPUnit_Framework_Constraint_IsFalse::matches <- PHPUnit_Framework_Constraint_IsFalse::matches <- PHPUnit_Framework_Constraint::evaluate <- PHPUnit_Framework_Assert::assertThat <- PHPUnit_Framework_Assert::assertFalse <- FunSetsTest::testUnionContainsAllElements ... Time: 1.85 seconds, Memory: 3.75Mb OK (9 tests, 23 assertions) The periods correspond to the successful tests before and after (and from) the test I was tracing. You can see the function entry ("->") and return ("<-") points. Cross checking with the testUnionContainsAllElements() source code confirms the two singletonSet() calls, one union() call, two assertTrue() calls and finally an assertFalse() call. These assertions have a contains() call as a parameter, so contains() is called before the PHPUnit assertion functions are run. You can see contains() being called recursively, and how the closures are invoked. If you want to focus on the application logic and suppress the PHPUnit function trace, you could turn off tracing when assertions are being checked by adding D clauses checking the entry and exit of assertFalse() and assertTrue(). But if you want to see all of PHPUnit's code flow, you can modify the functree.d code that sets and unsets self-follow, and instead change it to toggle the variable in request-startup and request-shutdown probes: php$target:::request-startup { self->follow = 1 } php$target:::request-shutdown { self->follow = 0 } Be prepared for a large amount of output!

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  • Google I/O 2012 - The Sensitive Side of Android

    Google I/O 2012 - The Sensitive Side of Android Tony Chan, Ankur Kotwal , Tim Bray, Tony Chan Android has a sensitive side. In this session, we will call out all the Android sensors: accelerometer, gyroscope, light, and more. We'll cover best practices for handling sensor data, with special focus on balancing battery life and usability. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 2157 35 ratings Time: 56:06 More in Science & Technology

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  • Android : développer en Pascal est désormais possible grâce au compilateur open-source Free Pascal

    Android : Développer en Pascal Est désormais possible grâce au compilateur open-source Free Pascal Depuis la version 2.3 d'Android, il est possible de produire du code Android natif sans avoir à écrire une seule ligne de code en Java. Avec le compilateur Free Pascal, un outil open-source et gratuit, il est donc désormais possible de développer pour l'OS mobile de Google en Pascal. Free Pascal est disponible avec une documentation très complète expliquant pas à pas comment l'utiliser. Tél...

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  • Google+ Platform Office Hours for March 28, 2012: Hangouts API v1.0

    Google+ Platform Office Hours for March 28, 2012: Hangouts API v1.0 Here's another video from a previous session of our office hours. Watch this video to learn about the Hangouts Apps launch from +Wolff and +Jonathan. Discuss this video on Google+: goo.gl 3:31 - Publishing your hangout app 4:28 - Hangout applications vs extensions 8:00 - The application switcher 9:58 - On the terms of service, privacy policy and support contact fields 12:07 - OAuth client and hangout apps featuring the API console 15:50 - Registering as a Chrome web store developer 17:44 - Linking to your hangout 20:25 - The hangout button 24:33 - How data URIs can make things easier in your apps Q&A 29:00 - What's the status of the REST APIs? 30:41 - How do I set the hangout topic or title? 31:19 - How do those of us in other time zones know when your office hours will be held? 34:04 - Can I use the hangout button with other peoples' hangout apps? From: GoogleDevelopers Views: 2788 28 ratings Time: 35:18 More in Science & Technology

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  • Google I/O 2012 - Storing Data in Google Apps Script

    Google I/O 2012 - Storing Data in Google Apps Script Drew Csillag This session covers the different ways in which developers can store data when using Google Script. We'll break things down by use case, and then show examples of how to use the different options: spreadsheet, Script/User Properties, JDBC connector, and distribution. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 24 1 ratings Time: 41:48 More in Science & Technology

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  • Is your test method self-validating ?

    - by mehfuzh
    Writing state of art unit tests that can validate your every part of the framework is challenging and interesting at the same time, its like becoming a samurai. One of the key concept in this is to keep our test synced all the time as underlying code changes and thus breaking them to the furthest unit as possible.  This also means, we should avoid  multiple conditions embedded in a single test. Let’s consider the following example of transfer funds. [Fact] public void ShouldAssertTranserFunds() {     var currencyService = Mock.Create<ICurrencyService>();     //// current rate     Mock.Arrange(() => currencyService.GetConversionRate("AUS", "CAD")).Returns(0.88f);       Account to = new Account { Currency = "AUS", Balance = 120 };     Account from = new Account { Currency = "CAD" };       AccountService accService = new AccountService(currencyService);       Assert.Throws<InvalidOperationException>(() => accService.TranferFunds(to, from, 200f));       accService.TranferFunds(to, from, 100f);       Assert.Equal(from.Balance, 88);     Assert.Equal(20, to.Balance); } At first look,  it seems ok but as you look more closely , it is actually doing two tasks in one test. At line# 10 it is trying to validate the exception for invalid fund transfer and finally it is asserting if the currency conversion is successfully made. Here, the name of the test itself is pretty vague. The first rule for writing unit test should always reflect to inner working of the target code, where just by looking at their names it is self explanatory. Having a obscure name for a test method not only increase the chances of cluttering the test code, but it also gives the opportunity to add multiple paths into it and eventually makes things messy as possible. I would rater have two test methods that explicitly describes its intent and are more self-validating. ShouldThrowExceptionForInvalidTransferOperation ShouldAssertTransferForExpectedConversionRate Having, this type of breakdown also helps us pin-point reported bugs easily rather wasting any time on debugging for something more general and can minimize confusion among team members. Finally, we should always make our test F.I.R.S.T ( Fast.Independent.Repeatable.Self-validating.Timely) [ Bob martin – Clean Code]. Only this will be enough to ensure, our test is as simple and clean as possible.   Hope that helps

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  • Google I/O 2011: YouTube's iframe Player: The Future of Embedding

    Google I/O 2011: YouTube's iframe Player: The Future of Embedding Jeffrey Posnick, Jarek Wilkiewicz, Greg Schechter YouTube players allow for video playback in web applications. The latest YouTube's embedded iframe player supports both Flash and HTML5 video and exposes a rich API which lets you control the YouTube playback experience. We'll give you the details on how the API was developed, and show you how it can power the videos on your own website. From: GoogleDevelopers Views: 11412 142 ratings Time: 54:37 More in Science & Technology

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  • Dartisans Ep. 6 - Meet the community - Dart hangout

    Dartisans Ep. 6 - Meet the community - Dart hangout In this episode of Dartisans, we are joined by special guests from the Dart community. John Evans, Adam Smith, Chris Buckett, John McCutchan, and Lars Tackmann talk about their Dart libraries, what they like about Dart, and what they want to see in the future. Get started with Dart at www.dartlang.org From: GoogleDevelopers Views: 4 0 ratings Time: 48:11 More in Science & Technology

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  • Impromptu-interface

    - by Sean Feldman
    While trying to solve a problem of removing conditional execution from my code, I wanted to take advantage of .NET 4.0 and it’s dynamic capabilities. Going with DynamicObject or ExpandoObject initially didn’t get me any success since those by default support properties and indexes, but not methods. Luckily, I have a reply for my post and learned about this great OSS library called impromptu-interface. It based on DLR capabilities in .NET 4.0 and I have to admit that it made my code extremely simple – no more if :)

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  • Google I/O 2011: Map your business, inside and out

    Google I/O 2011: Map your business, inside and out Brendan Kenny, Chris Broadfoot Your map doesn't have to end at the front door of the building! In this session we will discuss approaches to mapping all of your business locations, and not just on the outside. We'll show how to build a sensational storefinder, and then add floorplans, indoor Street View, and resource search. From: GoogleDevelopers Views: 4896 28 ratings Time: 51:31 More in Science & Technology

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  • An introduction to Dart, the structured web programming platform

    An introduction to Dart, the structured web programming platform Learn more about Dart at www.dartlang.org Seth Ladd presents Dart, the open source web programming platform. In this video, Seth gives an overview of the philosophy and motivation of the language, reviews some of the interesting new language features like optional static types and isolates, and gives a demo of the editor. Special thanks to http for recording the video, and for the invitation. From: GoogleDevelopers Views: 2 0 ratings Time: 01:01:44 More in Science & Technology

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  • Google I/O 2011: Memory management for Android Apps

    Google I/O 2011: Memory management for Android Apps Patrick Dubroy Android apps have more memory available to them than ever before, but are you sure you're using it wisely? This talk will cover the memory management changes in Gingerbread and Honeycomb (concurrent GC, heap-allocated bitmaps, "largeHeap" option) and explore tools and techniques for profiling the memory usage of Android apps. From: GoogleDevelopers Views: 5698 45 ratings Time: 58:42 More in Science & Technology

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