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How to replace a single word under cursor?
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answered Jan 9 '13 at 10:48
Brian AgnewBrian Agnew
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How to sum a variable by group
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404
Using aggregate:
aggregate(x$Frequency, by=list(Category=x$Category), FUN=sum)
Category x
1...
Autoreload of modules in IPython [duplicate]
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edited Aug 21 '19 at 15:20
rfho_bdss
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answered May 6 '12 at 17:37
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Convert object to JSON in Android
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edited Mar 24 at 6:02
Akshay
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answered Apr...
How to convert number to words in java
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107
Here is the code, I don't think there is any method in SE.
It basically converts number to str...
Can I click a button programmatically for a predefined intent?
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edited May 14 '13 at 10:01
laalto
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answe...
What are some compelling use cases for dependent method types?
...tside ResourceManager
def testHash(r : Resource) = assert(r.hash == "9e47088d")
def testDuplicates(r : Resource) = assert(r.duplicates(r))
}
trait FileManager extends ResourceManager {
type Resource <: File
trait File extends BasicResource {
def local : Boolean
}
override def c...
What's the need of array with zero elements?
...lloc(sizeof(*var) + extra);
You can access var->data with indices in [0, extra). Note that sizeof(struct something) will only give the size accounting for the other variables, i.e. gives data a size of 0.
It may be interesting also to note how the standard actually gives examples of mallocin...
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...
Why not abstract fields?
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105
You can do what you described by having a final field in your abstract class that is initialise...