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Unique constraint that allows empty values in MySQL
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One-liner to check whether an iterator yields at least one element?
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135
any won't go beyond the first element if it's True. In case the iterator yields something false...
How to get a vertical geom_vline to an x-axis of class date?
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How to test multiple variables against a value?
...inverse; testing multiple values against a single variable; x == 1 or 2 or 3 would fail for the same reasons. Use x == 1 or x == 2 or x == 3 or x in {1, 2, 3}.
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What is WEB-INF used for in a Java EE web application?
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edited May 15 '17 at 5:34
Basil Bourque
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Git: Recover deleted (remote) branch
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103
I'm not an expert. But you can try
git fsck --full --no-reflogs | grep commit
to find the HEA...
Difference between os.getenv and os.environ.get
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One difference observed (Python27):
os.environ raises an exception if the environmental variabl...
PEP 8, why no spaces around '=' in keyword argument or a default parameter value?
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I guess that it is because a keyword argument is essentially different than a variable assignmen...
Calculate date/time difference in java [duplicate]
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edited Nov 9 '18 at 13:52
vels4j
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answered M...