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what exactly is device pixel ratio?
...ation of what exactly does this attribute measure.
Can anyone please elaborate what does queries like this check?
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Receiver not registered exception error?
In my developer console people keep reporting an error that I cannot reproduce on any phone I have. One person left a message saying he gets it when they try to open the settings screen of my battery service. As you can see from the error it says that the receiver is not registered.
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How to get and set the current web page scroll position?
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You're looking for the document.documentElement.scrollTop property.
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How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
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The tilde operator isn't actually part of jQuery at all - it's a bitwise NOT operator in JavaScript itself.
See The Great Mystery of the Tilde(~).
You are getting strange numbers in your experiments because you are performing a bitwise log...
Convert Object to JSON string
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jQuery does only make some regexp checking before calling the native browser method window.JSON.parse(). If that is not available, it uses eval() or more exactly new Function() to create a Javascript object.
The opposite of JSON.parse() is JSON.stringify() which seriali...
Check if item is in an array / list
... strings, can I check to see if a string is in the array without doing a for loop? Specifically, I'm looking for a way to do it within an if statement, so something like this:
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Get file name from URL
In Java, given a java.net.URL or a String in the form of http://www.example.com/some/path/to/a/file.xml , what is the easiest way to get the file name, minus the extension? So, in this example, I'm looking for something that returns "file" .
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Is there a point to minifying PHP?
...peed increase if you attempted to "minify" the source. You would get a major increase by using a bytecode cache like APC.
Facebook introduced a compiler named HipHop that transforms PHP source into C++ code. Rasmus Lerdorf, one of the big PHP guys did a presentation for Digg earlier this year tha...
How do you push a tag to a remote repository using Git?
I have cloned a remote Git repository to my laptop, then I wanted to add a tag so I ran
9 Answers
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Convert NSURL to local file path
...ReplacingPercentEscapesUsingEncoding: method. If the receiver does not conform to RFC 1808, returns nil.
If this URL object contains a file URL (as determined with isFileURL), the return value of this method is suitable for input into methods of NSFileManager or NSPathUtilities. If the path has...