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what is the difference between ?:, ?! and ?= in regex?
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160
The difference between ?= and ?! is that the former requires the given expression to match and t...
How to convert a LocalDate to an Instant?
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101
The Instant class represents an instantaneous point on the time-line. Conversion to and from a ...
Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreat
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204
zip -d file.jar unwanted_file.txt
jar is just a zip file after all. Definitely much faster th...
What is the difference between Nexus and Maven?
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160
Sonatype Nexus and Apache Maven are two pieces of software that often work together but they do ...
Implementing slicing in __getitem__
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answered May 29 '10 at 22:56
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
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not None test in Python [duplicate]
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1033
if val is not None:
# ...
is the Pythonic idiom for testing that a variable is not set t...
Difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill?
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EmptyStackEmptyStack
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Will Dart support the use of existing JavaScript libraries?
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– Amit Tomar
Jan 31 '14 at 10:54
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@AmitTomar the community can't port over all JS librar...
Remove non-ascii character in string
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ASCII is in range of 0 to 127, so:
str.replace(/[^\x00-\x7F]/g, "");
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Matplotlib scatterplot; colour as a function of a third variable
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import matplotlib.pyplot as plt
# Generate data...
x = np.random.random(10)
y = np.random.random(10)
# Plot...
plt.scatter(x, y, c=y, s=500)
plt.gray()
plt.show()
Or, if you'd prefer a wider range of colormaps, you can also specify the cmap kwarg to scatter. To use the reversed version of a...