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Does const mean thread-safe in C++11?
I hear that const means thread-safe in C++11 . Is that true?
1 Answer
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Google Map API v3 — set bounds and center
...Kevin Workman
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answered Feb 5 '10 at 7:14
spencercoolyspencercooly
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How do I convert a string to a double in Python?
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>>> x = "2342.34"
>>> float(x)
2342.3400000000001
There you go. Use float (which behaves like and has the same precision as a C,C++, or Java double).
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
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Security Notice: This solution should not be used in situations where the quality of your ra...
Django - filtering on foreign key properties
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Asset.objects.filter( project__name__contains="Foo" )
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How to get row from R data.frame
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x[r,]
where r is the row you're interested in. Try this, for example:
#Add your data
x <...
How do I use arrays in C++?
...( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, when you read legacy code or interact with a library written in C, you should have a firm grasp on how arrays work.
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Multiprocessing - Pipe vs Queue
...e between similar tests using Pipe() and Queue()... This is on a ThinkpadT61 running Ubuntu 11.10, and Python 2.7.2.
FYI, I threw in results for JoinableQueue() as a bonus; JoinableQueue() accounts for tasks when queue.task_done() is called (it doesn't even know about the specific task, it just cou...
Right way to reverse pandas.DataFrame?
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data.reindex(index=data.index[::-1])
or simply:
data.iloc[::-1]
will reverse your data frame, if you want to have a for loop which goes from down to up you may do:
for idx in reversed(data.index):
print(idx, data.loc[idx, 'Even'], data.loc[idx, 'Od...
Does MySQL foreign_key_checks affect the entire database?
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edited Oct 9 '18 at 15:54
Giacomo1968
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