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How can I quickly sum all numbers in a file?
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answered Apr 23 '10 at 23:49
brian d foybrian d foy
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Are there any worse sorting algorithms than Bogosort (a.k.a Monkey Sort)? [closed]
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444
From David Morgan-Mar's Esoteric Algorithms page: Intelligent Design Sort
Introduction
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What do 'lazy' and 'greedy' mean in the context of regular expressions?
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Mibac
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answered Feb 20 '10 at 6:22
SampsonSampson
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Create numpy matrix filled with NaNs
...as np; a = np.empty((100,100));" "a.fill(np.nan)"
10000 loops, best of 3: 54.3 usec per loop
$ python -mtimeit "import numpy as np; a = np.empty((100,100));" "a[:] = np.nan"
10000 loops, best of 3: 88.8 usec per loop
The timings show a preference for ndarray.fill(..) as the faster alternative. OT...
How to strip all non-alphabetic characters from string in SQL Server?
...@Temp
End
Call it like this:
Select dbo.RemoveNonAlphaCharacters('abc1234def5678ghi90jkl')
Once you understand the code, you should see that it is relatively simple to change it to remove other characters, too. You could even make this dynamic enough to pass in your search pattern.
Hope it he...
Truncating floats in Python
...sing the IEEE floating-point format into the sequence of bits (assuming a 64-bit float)
0011111111010011001100110011001100110011001100110011001100110011
This is the closest value to 0.3 that can accurately be represented as an IEEE float. But if you write 0.29999999999999998 in a Python program, ...
Programmatically obtain the Android API level of a device?
...llowing way (it will execute if the current device's API level is at least 4)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.DONUT) {
}
To obtain user visible Android Version use:
Build.VERSION.RELEASE
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Read first N lines of a file in python
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249
Python 2
with open("datafile") as myfile:
head = [next(myfile) for x in xrange(N)]
print h...
How to concatenate multiple lines of output to one line?
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246
Use tr '\n' ' ' to translate all newline characters to spaces:
$ grep pattern file | tr '\n' '...