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Why does 0.ToString(“#.##”) return an empty string instead of 0.00 or at least 0?
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185
# in the string format indicate that the value is optional. If you wish to get the output 0.00...
How to count the number of true elements in a NumPy bool array
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>>> import numpy as np
>>> boolarr = np.array([[0, 0, 1], [1, 0, 1], [1, 0, 1]], dtype=np.bool)
>>> boolarr
array([[False, False, True],
[ True, False, True],
[ True, False, True]], dtype=bool)
>>> np.sum(boolarr)
5
Of course, that is a bool...
Why is January month 0 in Java Calendar?
In java.util.Calendar , January is defined as month 0, not month 1. Is there any specific reason to that ?
16 Answers
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iOS UIImagePickerController result image orientation after upload
I am testing my iPhone application on an iOS 3.1.3 iPhone. I am selecting/capturing an image using a UIImagePickerController :
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Matplotlib different size subplots
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import matplotlib.pyplot as plt
# generate some data
x = np.arange(0, 10, 0.2)
y = np.sin(x)
# plot it
f, (a0, a1) = plt.subplots(1, 2, gridspec_kw={'width_ratios': [3, 1]})
a0.plot(x, y)
a1.plot(y, x)
f.tight_layout()
f.savefig('grid_figure.pdf')
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Why does parseInt(1/0, 19) return 18?
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1294
The result of 1/0 is Infinity.
parseInt treats its first argument as a string which means fi...
Interpolating a string into a regex
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answered Sep 29 '08 at 18:53
Jonathan LonowskiJonathan Lonowski
108k3131 gold badges188188 silver badges191191 bronze badges
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Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
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197
Here is a fairly concise way to do this:
static readonly string[] SizeSuffixes =
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Regular expression for floating point numbers
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12 Answers
12
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