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How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
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11 Answers
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while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?
Intrigued by this question about infinite loops in perl: while (1) Vs. for (;;) Is there a speed difference? , I decided to run a similar comparison in python. I expected that the compiler would generate the same byte code for while(True): pass and while(1): pass , but this is actually not the c...
Extract elements of list at odd positions
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Solution
Yes, you can:
l = L[1::2]
And this is all. The result will contain the elements placed on the following positions (0-based, so first element is at position 0, second at 1 etc.):
1, 3, 5
so the result (actual numbers) will be:
2, 4, 6
Exp...
how to use sed, awk, or gawk to print only what is matched?
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Python unittests in Jenkins?
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174
sample tests:
tests.py:
# tests.py
import random
try:
import unittest2 as unittest
exce...
Append value to empty vector in R?
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212
Appending to an object in a for loop causes the entire object to be copied on every iteration, ...
Black transparent overlay on image hover with only CSS?
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212
I'd suggest using a pseudo element in place of the overlay element. Because pseudo elements can...
How to change border color of textarea on :focus
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.input:focus {
outline: none !important;
border:1px solid red;
box-shadow: 0 0 10px #719ECE;
}
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Matplotlib discrete colorbar
...t matplotlib as mpl
import matplotlib.pylab as plt
fig, ax = plt.subplots(1, 1, figsize=(6, 6)) # setup the plot
x = np.random.rand(20) # define the data
y = np.random.rand(20) # define the data
tag = np.random.randint(0, 20, 20)
tag[10:12] = 0 # make sure there are some 0 values to show up as...