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When is the thread pool used?
So I have an understanding of how Node.js works: it has a single listener thread that receives an event and then delegates it to a worker pool. The worker thread notifies the listener once it completes the work, and the listener then returns the response to the caller.
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Is it good style to explicitly return in Ruby?
... "Pythonic" way) when it comes to style, I'm wondering if the same exists for Ruby. I've been using my own style guidelines but I'm thinking about releasing my source code, and I'd like it to adhere to any unwritten rules that might exist.
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What does $$ (dollar dollar or double dollar) mean in PHP?
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A syntax such as $$variable is called Variable Variable.
For example, if you consider this portion of code :
$real_variable = 'test';
$name = 'real_variable';
echo $$name;
You will get the following output :
test
Here :
$real_variable contains test
$name contains the name o...
Should I use multiplication or division?
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Python:
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 / 2.0'
real 0m26.676s
user 0m25.154s
sys 0m0.076s
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 * 0.5'
real 0m17.932s
user 0m16.481s
sys 0m0.048s...
How do I script a “yes” response for installing programs?
I work with Amazon Linux instances and I have a couple scripts to populate data and install all the programs I work with, but a couple of the programs ask:
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Is there an upside down caret character?
...arge number of classic ASP pages, many of which have tabular data with no sort capabilities at all. Whatever order the original developer used in the database query is what you're stuck with.
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Batch script to delete files
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I can't speak for the OP, but on my system there's no problem finding a path with %, and escaping with %% keeps the system from finding it.
– RonaldBarzell
Dec 7 '12 at 13:36
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Best way to change the background color for an NSView
I'm looking for the best way to change the backgroundColor of an NSView . I'd also like to be able to set the appropriate alpha mask for the NSView . Something like:
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Stop LastPass filling out a form
...y to prevent the LastPass browser extension from filling out a HTML-based form with a input field with the name "username"?
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When does invoking a member function on a null instance result in undefined behavior?
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Both (a) and (b) result in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute.
The first thing to understand is why it's undefi...