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Concatenate multiple files but include filename as section headers
... to concatenate a number of text files into one large file in terminal. I know I can do this using the cat command. However, I would like the filename of each file to precede the "data dump" for that file. Anyone know how to do this?
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Initial size for the ArrayList
... (int i = 0; i < 10; i++) {
arr.add(0);
}
Having done this, you can now modify elements at indices 0..9.
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Using numpy to build an array of all combinations of two arrays
... [3, 5, 6],
[3, 5, 7]])
numpy.meshgrid() use to be 2D only, now it is capable of ND. In this case, 3D:
In [115]:
%timeit np.array(np.meshgrid([1, 2, 3], [4, 5], [6, 7])).T.reshape(-1,3)
10000 loops, best of 3: 74.1 µs per loop
In [116]:
np.array(np.meshgrid([1, 2, 3], [4, 5], [6, ...
How to wait for all threads to finish, using ExecutorService?
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What if you don't know the number of tasks before you start?
– cletus
Aug 9 '09 at 10:26
11
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Lists in ConfigParser
...ause it does automatically "cast" values which can be useful if you don't know the types beforehand.
– LeGBT
Oct 26 '14 at 21:26
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Is there a label/goto in Python?
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Granted, that isn't the best way to substitute for goto. But without knowing exactly what you're trying to do with the goto, it's hard to give specific advice.
@ascobol:
Your best bet is to either enclose it in a function or use an exception. For the function:
def loopfunc():
while 1:
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What is the easiest way to make a C++ program crash?
... to make a quick C++ program that crashes on purpose but I don't actually know the best and shortest way to do that, does anyone know what to put between my:
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socket.shutdown vs socket.close
...ing if (1) you have forked the process and definitely want to send the FIN now, or (2) you are engaging in a mutual read-to-EOS protocol such that both peers close at the same time. Otherwise close() is sufficient. The Python documentation should be corrected.
– Marquis of Lorn...
Java ResultSet how to check if there are any results
...ately after to reset it, since it has positioned itself past the first row now.
It should be noted however, that Seifer's answer below is a more elegant solution to this question.
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Suppress deprecated import warning in Java
... the part of the code that is causing deprecation or using deprecated API. Now either you can run your code with these warnings or make appropriate changes in the code.
In my case I was using someListItem.addItem("red color") whereas the compiler wanted me to use someListItem.add("red color");.
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