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Using comparison operators in Scala's pattern matching system
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answered Oct 18 '09 at 16:53
Ben JamesBen James
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Catching error codes in a shell pipe
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Jonathan LefflerJonathan Leffler
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Adding an arbitrary line to a matplotlib plot in ipython notebook
....random.seed(5)
x = np.arange(1, 101)
y = 20 + 3 * x + np.random.normal(0, 60, 100)
plt.plot(x, y, "o")
# draw vertical line from (70,100) to (70, 250)
plt.plot([70, 70], [100, 250], 'k-', lw=2)
# draw diagonal line from (70, 90) to (90, 200)
plt.plot([70, 90], [90, 200], 'k-')
plt.show()
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Java variable number or arguments for a method
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Why do indexes in XPath start with 1 and not 0?
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answered Oct 9 '15 at 16:15
mike mckechniemike mckechnie
67677 silver badges1212 bronze badges
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Cost of len() function
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360
It's O(1) (constant time, not depending of actual length of the element - very fast) on every t...
Why is early return slower than else?
...se():
>>> T(lambda : without_else()).repeat()
[0.42015745017874906, 0.3188967452567226, 0.31984281521812363]
>>> T(lambda : with_else()).repeat()
[0.36009842032996175, 0.28962249392031936, 0.2927151355828528]
>>> T(lambda : without_else(True)).repeat()
[0.3170972847107691...
Stack vs heap allocation of structs in Go, and how they relate to garbage collection
...pe
// ...
return chunk, nil
}
type bigStruct struct {
lots [1e6]float64
}
func myFunction3() (bigStruct, error) {
var chunk bigStruct
// ...
return chunk, nil
}
I modified myFunction2 to return the struct rather than the address of the struct. Compare the assembly output...
Scala constructor overload?
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186
It's worth explicitly mentioning that Auxiliary Constructors in Scala must either call the prima...