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How do you find out the caller function in JavaScript?
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Ball to Ball Collision - Detection and Handling
...ther balls on the boundaries of a section, so this may make your code much more complicated. Efficiency probably won't matter until you have several hundred balls though. For bonus points, you can run each section on a different core, or split up the processing of collisions within each section.
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Scoping in Python 'for' loops
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How would the grammar be more complicated if the scope of the induction variable were limited to the body of the loop? Such a change would be confined to the semantic analysis in Python, not to its grammar.
– Charles
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Checking if sys.argv[x] is defined
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I love Python more and more, all thanks to answers like that and Stack Overflow of course! Too bad we don't have an explanation of last two lines. I believe for beginners that would be great.
– Goujon
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How efficient can Meteor be while sharing a huge collection among many clients?
...ed, this.changed and
this.removed. See the
full publish documentation for
more details.
Most publish functions don't have to muck around with the low-level
added, changed and removed API, though. If a publish function returns a Mongo
cursor, the Meteor server automatically connects the output of ...
Hidden features of Windows batch files
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NSInvocation for Dummies?
...static, that is, it is an action turned into an object.
And, in a little more detail:
The concept of messages is central to the objective-c philosophy. Any time you call a method, or access a variable of some object, you are sending it a message. NSInvocation comes in handy when you want to send ...
How does the Amazon Recommendation feature work?
...n your social network/buying circles - if you rate things you like you get more of what you like and if you confirm with the "i already own it" button they create a very complete profile of you
Demographic information (your shipping address, etc.) - they know what is popular in your general area f...
PHP: How to send HTTP response code?
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I just found this question and thought it needs a more comprehensive answer:
As of PHP 5.4 there are three methods to accomplish this:
Assembling the response code on your own (PHP >= 4.0)
The header() function has a special use-case that detects a HTTP response line a...
Saving a Numpy array as an image
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