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What is non-blocking or asynchronous I/O in Node.js?

...chronous execution refers to execution that doesn't run in the sequence it appears in the code. In the following example, the synchronous operation causes the alerts to fire in sequence. In the async operation, while alert(2) appears to execute second, it doesn't. Synchronous: 1,2,3 alert(1); ...
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Caching a jquery ajax response in javascript/browser

... I was looking for caching for my phonegap app storage and I found the answer of @TecHunter which is great but done using localCache. I found and come to know that localStorage is another alternative to cache the data returned by ajax call. So, I created one demo usi...
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Algorithm to detect corners of paper sheet in photo

... Hi Daniel, thanks for getting involved. I like you approach. its actually the route Im getting good results with at the moment. There was even and OpenCV example what detected the rectangles. Just had to do some filtering on the results. as you were saying the white on white ...
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How to write Unicode characters to the console?

I was wondering if it was possible, in a console application, to write characters like ℃ using .NET. When I try to write this character, the console outputs a question mark. ...
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Jquery selector input[type=text]')

... are coming from, but if performance of a $ call is that important to your app, please avoid using jQuery altogether :). This answer tried to answer OP's question, if it had been a question of performance, this answer won't be here in the first place. Thanks anyhow for the comment :), appreciate it ...
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SSH to Elastic Beanstalk instance

...22 | 192.168.1.1/32 Configure the environment of your Elastic Beanstalk Application If you haven't made a key pair yet, make one by clicking Key Pairs below Security Group in the ec2 tab. In the AWS console, open the Elastic Beanstalk tab. Select the relevant region. Select relevant Environment...
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What is the difference between Amazon S3 and Amazon EC2 instance?

I need to create a web application using php mysql and html. The no.of requests and data will be very high. I need Amazon server space. ...
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Best Timer for using in a Windows service

...eb.UI.Timer and System.Windows.Forms.Timer, which are respectively for ASP applications and WinForms. Using those will cause the service to load an additional assembly which is not really needed for the type of application you are building. Use System.Timers.Timer like the following example (also, ...
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Programmatically fire button click event?

... touch. See cocoawithlove.com/2008/10/…. However, you cannot submit your app to the App Store using this method, as it uses a private API. It is normally used for debugging purposes. – Evan Mulawski Apr 11 '11 at 18:32 ...
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Convert Time from one time zone to another in Rails

...built into Rails, but is not part of the Ruby stdlib. If you have a rails app, no problem. If you have a straight Ruby app you'll need to be sure to require active support. – Gayle Jan 8 '13 at 15:58 ...