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How do you append to a file in Python?
...n C++. If you forget close(), it might take a while before the file is actually closed. It is easier that you might think to forget it when the code has multiple exit points, exceptions and so on.
– Petter
Jun 13 '13 at 17:37
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Relationship between hashCode and equals method in Java [duplicate]
...t is: objects which are .equals() MUST have the same .hashCode().
This is all documented in the javadoc for Object. And Joshua Bloch says you must do it in Effective Java. Enough said.
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Does every Javascript function have to return a value?
...ow level, the return is translated into some sort of jump. If a function really returned nothing at all, there would be no way of knowing what and when to call the next function, or to call event handlers and the like.
So to recap: No, a JS function needn't return anything as far as your code goes....
How does RewriteBase work in .htaccess
... want to clear up some details on htaccess.. does a ReWriteBase set it for all rules in the htaccess following what its declaration? is there a way to unset it, can it be reset?
– Damon
Apr 25 '13 at 15:32
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Reference assignment operator in PHP, =&
...rror changes made to another, instead of copying the existing data.
It's called assignment by reference, which, to quote the manual, "means that both variables end up pointing at the same data, and nothing is copied anywhere".
The only thing that is deprecated with =& is "assigning the result ...
Bare asterisk in function arguments?
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Bare * is used to force the caller to use named arguments - so you cannot define a function with * as an argument when you have no following keyword arguments.
See this answer or Python 3 documentation for more details.
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Calculating moving average
...y helpful though. There doesn't seem to be a built-in function in R will allow me to calculate moving averages. Do any packages provide one? Or do I need to write my own?
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How to customize the background color of a UITableViewCell?
I would like to customize the background (and maybe the border too) of all of the UITableViewCells within my UITableView. So far I have not been able to customize this stuff, so I have a bunch of white background cells which is the default.
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Project management to go with GitHub [closed]
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If you're thinking that you'll really be the only developer, Fogbugz will help you keep your sanity. Fogbugz is a great product, It builds focused communications and can turn anything into a case (issue). It does all that as well as any system I've seen.
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Using relative URL in CSS file, what location is it relative to?
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if your css is in a bundle the path really doesn't matter. It's not where you think it's going to be, nothing is relative anymore.
– Tod
Mar 15 '18 at 14:44
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