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How to share Eclipse configuration over different workspaces
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edited Mar 14 '12 at 0:56
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answered Jan 16 '10 at 1...
List submodules in a Git repository
I have a Git repository that has several submodules in it. How do I list the names of all the submodules after git submodule init has been run?
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How to save an image to localStorage and display it on the next page?
So, basically, I need to upload a single image, save it to localStorage, then display it on the next page.
7 Answers
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Display filename before matching line
How can I get grep to display the filename before the matching lines in its output?
6 Answers
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How to normalize an array in NumPy?
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If you're using scikit-learn you can use sklearn.preprocessing.normalize:
import numpy as np
from sklearn.preprocessing import normalize
x = np.random.rand(1000)*10
norm1 = x / np.linalg.norm(x)
norm2 = normalize(x[:,np.newaxis], axis=0).ravel...
Why does the lock object have to be static?
It is very common to use a private static readonly object for locking in multi threading.
I understand that private reduces the entry points to the locking object by tightening the encapsulation and therefore access to the most essential.
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JavaScript: remove event listener
I'm trying to remove an event listener inside of a listener definition:
8 Answers
8
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How to write DataFrame to postgres table?
There is DataFrame.to_sql method, but it works only for mysql, sqlite and oracle databases. I cant pass to this method postgres connection or sqlalchemy engine.
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How to avoid circular imports in Python? [duplicate]
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Doesn't seem to work with submodules import foobar.mod_a and import foobar.mod_b doesn't work like described above.
– Nick
Oct 2 '13 at 0:39
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How to toggle a value in Python
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Solution using XOR
If the value toggles between 0 and 1, you can use a bitwise exclusive-or:
>>> x = 1
>>> x ^= 1
>>> x
0
>>> x ^= 1
>>> x
1
The technique generalizes to any pair of integers. The xor-by-one step is replaced with a xor-by-precompute...