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What is the difference between a directory and a folder?

...From a programmer point of view, is there a difference, and if so, what is it? Does it depend on the OS, or is there a broad, general consensus? This at least suggests that there is a difference. ...
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Duplicate and rename Xcode project & associated folders [closed]

...cate an entire Xcode project, rename the project and the associated files without Xcode going mental, and without having to manually re-import all files to the project. ...
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Exit Shell Script Based on Process Exit Code

...cript that executes a number of commands. How do I make the shell script exit if any of the commands exit with a non-zero exit code? ...
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Testing web application on Mac/Safari when I don't own a Mac

Having been caught out recently when a web site I launched displayed perfectly on IE, Firefox, Chrome and Safari on Windows but was corrupted when viewed using Safari on the Mac (by a potential customer), I need to start testing how my sites look when viewed on a Mac. ...
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Finding what methods a Python object has

... For many objects, you can use this code, replacing 'object' with the object you're interested in: object_methods = [method_name for method_name in dir(object) if callable(getattr(object, method_name))] I discovered it at diveintopython.net (Now archived). Hopefully...
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How do I correctly clean up a Python object?

__del__(self) above fails with an AttributeError exception. I understand Python doesn't guarantee the existence of "global variables" (member data in this context?) when __del__() is invoked. If that is the case and this is the reason for the exception, how do I make sure the object destructs...
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Why is sizeof considered an operator?

... Because the C standard says so, and it gets the only vote. As consequences: The operand of sizeof can be a parenthesised type, sizeof (int), instead of an object expression. The parentheses are unnecessary: int a; printf("%d\n", sizeof a); is perfectly fine....
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Rollback to an old Git commit in a public repo

How can I go about rolling back to a specific commit in git ? 11 Answers 11 ...
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“CAUTION: provisional headers are shown” in Chrome debugger

...est Versions of chrome Type chrome://net-export/ in the address bar and hit enter. Start Recording. And save Recording file to local. Open the page that is showing problems. Go back to net-internals You can view Recorded Log file Here https://netlog-viewer.appspot.com/#import click on events (###)...
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Formula to determine brightness of RGB color

I'm looking for some kind of formula or algorithm to determine the brightness of a color given the RGB values. I know it can't be as simple as adding the RGB values together and having higher sums be brighter, but I'm kind of at a loss as to where to start. ...