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Check if OneToOneField is None in Django
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92
To check if the (OneToOne) relation exists or not, you can use the hasattr function:
if hasatt...
All falsey values in JavaScript
...draft) (the only changes since the very first ECMAscript specification in 1997 are the addition of ES6's Symbols, which are always truthy, and BigInt, mentioned above:
Comparisons with == (loose equality)
It's worth talking about falsy values' loose comparisons with ==, which uses ToNumber() a...
Renaming files in a folder to sequential numbers
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answered Jul 9 '10 at 10:18
gautehgauteh
13k33 gold badges2424 silver badges3232 bronze badges
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In C# check that filename is *possibly* valid (not that it exists) [duplicate]
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94
Just do;
System.IO.FileInfo fi = null;
try {
fi = new System.IO.FileInfo(fileName);
}
catch ...
Difference between author and committer in Git?
...is to happen?
– cowlinator
Feb 14 '19 at 23:19
3
Also, calling the author the "person who wrote t...
How can I set the aspect ratio in matplotlib?
...henya's answer suggests it's fixed in the latest version. I have version 0.99.1.1 and I've created the following solution:
import matplotlib.pyplot as plt
import numpy as np
def forceAspect(ax,aspect=1):
im = ax.get_images()
extent = im[0].get_extent()
ax.set_aspect(abs((extent[1]-ex...
Mercurial stuck “waiting for lock”
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492
When "waiting for lock on repository", delete the repository file: .hg/wlock (or it may be in ....
From an array of objects, extract value of a property as array
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edited Apr 19 at 13:50
Arsen Khachaturyan
5,90933 gold badges3232 silver badges3434 bronze badges
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How to retrieve all keys (or values) from a std::map and put them into a vector?
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179
While your solution should work, it can be difficult to read depending on the skill level of you...