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what exactly is device pixel ratio?
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Short answer
The device pixel ratio is the ratio between physical pixels and logical pixels. For instance, the iPhone 4 and iPhone 4S report a device pixel ratio of 2, because the physical linear resolution is double the logical linear resolution.
Physical resolution: 960 x 640
Logical resolutio...
How to do stateless (session-less) & cookie-less authentication?
Bob uses a web application in order to achieve something. And:
2 Answers
2
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How to append something to an array?
...to the length property. The interpreter does an amazing job at that itself and it will not make any difference in The Real World whether you optimize it away or not. If your array becomes so huge that optimizing .length would actually help, most probably an array is not the right data structure anym...
How to lock orientation during runtime
...ing runtime? For example I'd like to allow the user to lock the screen to landscape if the user currently in landscape and toggle the menu option.
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How to interactively (visually) resolve conflicts in SourceTree / git
...m using (Windows) SourceTree for my git project. I can do it in either command prompt or Linux terminal.
3 Answers
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What is the best algorithm for overriding GetHashCode?
...he implementation given in Josh Bloch's fabulous Effective Java. It's fast and creates a pretty good hash which is unlikely to cause collisions. Pick two different prime numbers, e.g. 17 and 23, and do:
public override int GetHashCode()
{
unchecked // Overflow is fine, just wrap
{
i...
HTML5shiv vs Dean Edwards IE7-js vs Modernizr - which to choose?
I'm looking to build my first HTML5 site and have been looking at working with IE.
3 Answers
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PDO get the last ID inserted
I have a query, and I want to get the last ID inserted. The field ID is the primary key and auto incrementing.
3 Answers
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Is it possible to send an array with the Postman Chrome extension?
I've been using Postman Chrome extension to test out my API and would like to send an array of IDs via post. Is there a way to send something list this as a parameter in Postman?
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In Sublime Text 2, how do I open new files in a new tab?
When I'm editing with files on the server, and I click to edit them, if I'm editing multiple files (say an HTML file and a CSS file) but they open in new windows, which, on my small laptop display is a little inconvenient.
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