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Difference between Django's annotate and aggregate methods?
...jects.annotate(num_authors=Count('authors'))
>>> q[0].num_authors
2
>>> q[1].num_authors
1
q is the queryset of books, but each book has been annotated with the number of authors.
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Sharing src/test classes between modules in a multi-module maven project
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sql query to return differences between two tables
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What's a monitor in Java?
... synchronized(someObject) {
// do something (1)
}
}
Thread 2:
public void b()
{
synchronized(someObject) {
// do something else (2)
}
}
This prevents Threads 1 and 2 accessing the monitored (synchronized) section at the same time. One will start, and monitor will p...
How do I create an empty array in YAML?
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edited Feb 24 '11 at 22:50
answered Feb 24 '11 at 20:54
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Python exit commands - why so many and when should each be used?
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mhsmith
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answered Nov 2 '13 at 22:22
user2555451user2555...
Return XML from a controller's action in as an ActionResult?
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edited Jun 23 '16 at 10:57
Liam
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Prevent onmouseout when hovering child element of the parent absolute div WITHOUT jQuery
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How to force the browser to reload cached CSS/JS files?
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