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Start thread with member function
...re out any syntax that works - the compiler complains no matter what. What is the correct way to implement spawn() so that it returns a std::thread that executes test() ?
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Do AJAX requests retain PHP Session info?
If I had a user logged onto my site, having his id stored in $_SESSION , and from his browser he clicked a 'Save' button which would make an AJAX request to the server. Will his $_SESSION and cookies be retained in this request, and can I safely rely on the id being present in the $_SESSION ?
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Why are variables “i” and “j” used for counters?
I know this might seem like an absolutely silly question to ask, yet I am too curious not to ask...
23 Answers
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Saving a Numpy array as an image
I have a matrix in the type of a Numpy array. How would I write it to disk it as an image? Any format works (png, jpeg, bmp...). One important constraint is that PIL is not present.
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Removing multiple keys from a dictionary safely
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Why not like this:
entries = ('a', 'b', 'c')
the_dict = {'b': 'foo'}
def entries_to_remove(entries, the_dict):
for key in entries:
if key in the_dict:
del the_dict[key]
A more compact version was provided by matt...
How to ignore xargs commands if stdin input is empty?
Consider this command:
6 Answers
6
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How can I catch all the exceptions that will be thrown through reading and writing a file?
In Java, is there any way to get(catch) all exceptions instead of catch the exception individually?
7 Answers
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How to make an immutable object in Python?
Although I have never needed this, it just struck me that making an immutable object in Python could be slightly tricky. You can't just override __setattr__ , because then you can't even set attributes in the __init__ . Subclassing a tuple is a trick that works:
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How to set layout_weight attribute dynamically from code?
...PARENT,
1.0f
);
YOUR_VIEW.setLayoutParams(param);
The last parameter is the weight.
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Are inline virtual functions really a non-sense?
I got this question when I received a code review comment saying virtual functions need not be inline.
13 Answers
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