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Why does comparing strings using either '==' or 'is' sometimes produce a different result?
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14 Answers
14
Active
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How to center align the ActionBar title in Android?
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Jithin Jude
40777 silver badges1212 bronze badges
answered Sep 12 '12 at 12:29
AhmadAhmad
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How do I create and read a value from cookie?
... var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
expires = "; expires=" + date.toGMTString();
}
else {
expires = "";
}
document.cookie = name + "=" + value + expires + "; path=/";
}
function getCookie(c_name) {
if (...
PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
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edited Feb 15 '18 at 22:43
Karl Richter
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an...
Cannot generate iOS App archive in xcode
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40 Answers
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Command to get nth line of STDOUT
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343
Using sed, just for variety:
ls -l | sed -n 2p
Using this alternative, which looks more effi...
How to find reason of failed Build without any error or warning
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answered Dec 11 '14 at 14:42
Richard J FosterRichard J Foster
3,63022 gold badges2727 silver badges3939 bronze badges
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How do I make Git ignore file mode (chmod) changes?
...le from another
environment that loses the filemode (e.g. exporting ext4
via CIFS mount, visiting a Cygwin created repository with Git
for Windows or Eclipse). In such a case it may be necessary
to set this variable to false. See git-update-index(1).
The default is true (when co...
Changing the “tick frequency” on x or y axis in matplotlib?
...umpy as np
import matplotlib.pyplot as plt
x = [0,5,9,10,15]
y = [0,1,2,3,4]
plt.plot(x,y)
plt.xticks(np.arange(min(x), max(x)+1, 1.0))
plt.show()
(np.arange was used rather than Python's range function just in case min(x) and max(x) are floats instead of ints.)
The plt.plot (or ax.plot) fu...
Python - Create a list with initial capacity
... result[i]= message
return result
Results. (evaluate each function 144 times and average the duration)
simple append 0.0102
pre-allocate 0.0098
Conclusion. It barely matters.
Premature optimization is the root of all evil.
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