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Instance variables vs. class variables in Python
I have Python classes, of which I need only one instance at runtime, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (which won't happen), all instance should have the same configuration. I wonder which of the follow...
The key must be an application-specific resource id
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SQL - using alias in Group By
Just curious about SQL syntax. So if I have
10 Answers
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Find duplicate lines in a file and count how many time each line was duplicated?
Suppose I have a file similar to the following:
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Elastic Search: how to see the indexed data
I had a problem with ElasticSearch and Rails, where some data was not indexed properly because of attr_protected. Where does Elastic Search store the indexed data? It would be useful to check if the actual indexed data is wrong.
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Losing scope when using ng-include
I have this module routes:
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Case in Select Statement
I have an SQL statement that has a CASE from SELECT and I just can't get it right. Can you guys show me an example of CASE where the cases are the conditions and the results are from the cases. For example:
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What does JVM flag CMSClassUnloadingEnabled actually do?
I cannot for the life of me find a definition of what the Java VM flag CMSClassUnloadingEnabled actually does, other than some very fuzzy high-level definitions such as "gets rid of your PermGen problems" ( which it doesn't , btw).
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Measure execution time for a Java method [duplicate]
How do I calculate the time taken for the execution of a method in Java?
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Remove warning messages in PHP
I have some PHP code. When I run it, a warning message appears.
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