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Using OpenGl with C#? [closed]
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How would you go about that on Linux (with mono)?
– deceleratedcaviar
Jun 19 '11 at 22:17
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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...void using apply
Apply is generally not much faster than iterating over a Python list. Let's test the performance of a for-loop to do the same thing as above
%%timeit
A1, A2 = [], []
for val in df['a']:
A1.append(val**2)
A2.append(val**3)
df['A1'] = A1
df['A2'] = A2
298 ms ± 7.14 ms per...
Hibernate error - QuerySyntaxException: users is not mapped [from users]
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Some Linux based MySQL installations require case sensitive. Work around is to apply nativeQuery.
@Query(value = 'select ID, CLUMN2, CLUMN3 FROM VENDOR c where c.ID = :ID', nativeQuery = true)
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How can I strip first X characters from string using sed?
I am writing shell script for embedded Linux in a small industrial box. I have a variable containing the text pid: 1234 and I want to strip first X characters from the line, so only 1234 stays. I have more variables I need to "clean", so I need to cut away X first characters and ${string:5} does...
How can I use numpy.correlate to do autocorrelation?
...sult, and that should be the autocorrelation you are looking for. A simple python function to do that would be:
def autocorr(x):
result = numpy.correlate(x, x, mode='full')
return result[result.size/2:]
You will, of course, need error checking to make sure that x is actually a 1-d array. ...
Tree view of a directory/folder in Windows? [closed]
In Linux/KDE, I can see a directory as a tree. How can I do it in Windows 7?
6 Answers
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What is the difference between \r and \n?
...his post while trying to figure out how to split <textarea> input in Python, and \r\n is actually the only way I could properly split the lines into separate list elements. It makes me wonder if this is some weird HTML artifact, or if it has to do with the way that Python ingests the string fr...
How to clear https proxy setting of NPM?
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This work on windows. Try npm config rm http-proxy on linux
– Sydwell
Jun 14 '15 at 18:18
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Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
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However, the default Python driver for sqlite prevents transactional SQL. bugs.python.org/issue10740
– joeforker
Sep 17 '13 at 18:57
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Is there a way to include commas in CSV columns without breaking the formatting?
... There are multiple specs, Excel uses quotes around the entry, Linux uses the backslash character. Unfortunately, you need to escape for your intended audience/target system.
– Rudu
Jan 6 '11 at 17:56
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