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Showing all errors and warnings [duplicate]
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1194
Display errors could be turned off in the php.ini or your Apache configuration file.
You can ...
How do you add a Dictionary of items into another Dictionary
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172
You can define += operator for Dictionary, e.g.,
func += <K, V> (left: inout [K:V], rig...
How to debug Lock wait timeout exceeded on MySQL?
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11 Answers
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Adding a legend to PyPlot in Matplotlib in the simplest manner possible
...import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 20, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, "-b", label="sine")
plt.plot(x, y2, "-r", label="cosine")
plt.legend(loc="upper left")
plt.ylim(-1.5, 2.0)
plt.show()
Slightly modified from this tutorial: http://jakevd...
How do I associate a Vagrant project directory with an existing VirtualBox VM?
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10 Answers
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Selecting/excluding sets of columns in pandas [duplicate]
...ed OR Select the ones you need
# Using DataFrame.drop
df.drop(df.columns[[1, 2]], axis=1, inplace=True)
# drop by Name
df1 = df1.drop(['B', 'C'], axis=1)
# Select the ones you want
df1 = df[['a','d']]
share
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How do you use the ellipsis slicing syntax in Python?
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Ellipsis, or ... is not a hidden feature, it's just a constant. It's quite different to, say, ...
How to make connection to Postgres via Node.js
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Here is an example I used to connect node.js to my Postgres database.
The interface in node.js...