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Traits in PHP – any real world examples/best practices? [closed]
... see your point, I´m also pondering whether traits are worth it or not. I mean, in modern frameworks like Symfony 2 you have dependency injection all over the place which seems superioir over traits in most of the cases. At the moment I see traits as not much more then "compiler assisted copy &...
What methods of ‘clearfix’ can I use?
...t considerations when floating stuff:
Containing descendant floats. This means that the element in question makes itself tall enough to wrap all floating descendants. (They don't hang outside.)
Insulating descendants from outside floats. This means that descendants inside of an element should be...
What's the main difference between Java SE and Java EE? [duplicate]
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by 'web application' i didn't only mean 'web sites'. I should have said, server applications to be more clear, you are right
– Savvas Dalkitsis
Jun 24 '13 at 16:19
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How do I 'git diff' on a certain directory?
...elative to your current directory. Without the --, git will guess what you mean, [commit-ish] or [path]. In some cases, this causes git to say the notation is 'ambiguous'. If I remember correctly.
– L0LN1NJ4
Aug 12 '14 at 13:00
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Checking to see if a DateTime variable has had a value assigned
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do you mean like so:
DateTime datetime = new DateTime();
if (datetime == DateTime.MinValue)
{
//unassigned
}
or you could use Nullable
DateTime? datetime = null;
if (!datetime.HasValue)
{
//unassigned
}
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Is it safe to parse a /proc/ file?
...ese calls in an entirely different way than for regular files, which could mean that the entire snapshot of the data you will read could be ready at the time you open(2) it, while the kernel makes sure that concurrent calls are consistent and atomic. I haven't read that anywhere, but it doesn't real...
Canvas is stretched when using CSS but normal with “width” / “height” properties
I have 2 canvases, one uses HTML attributes width and height to size it, the other uses CSS:
8 Answers
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What is the “-->” operator in C++?
....." to make it clearer. But this is nitpicking anyway. We all know what is meant.
– Johannes Schaub - litb
Jan 30 '10 at 17:42
38
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Modifying a subset of rows in a pandas dataframe
....where(df.a.values == 0, np.nan, df.b.values)
685 µs ± 6.4 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)
%timeit df.loc[df['a'] == 0, 'b'] = np.nan
3.11 ms ± 17.2 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
Numpy's where is about 4x faster
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Good example of livelock?
...anyone had a good code-based example of it? And by code-based, I do not mean "two people trying to get past each other in a corridor". If I read that again, I'll lose my lunch.
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