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Find MongoDB records where array field is not empty
...h an empty list, and 5 docs with a non-empty list.
for (var i = 0; i < 1000; i++) { db.doc.insert({}); }
for (var i = 0; i < 1000; i++) { db.doc.insert({ nums: [] }); }
for (var i = 0; i < 5; i++) { db.doc.insert({ nums: [1, 2, 3] }); }
db.doc.createIndex({ nums: 1 });
I recognize this i...
How do I declare an array of weak references in Swift?
...Type>.weakObjects()
NSHashTable Class Reference
Available in OS X v10.5 and later.
Available in iOS 6.0 and later.
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How to set java_home on Windows 7?
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KarSho
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RobsRobs
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Does SQLAlchemy have an equivalent of Django's get_or_create?
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That's basically the way to do it, there is no shortcut readily available AFAIK.
You could ge...
How to set time zone of a java.util.Date?
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How can I improve my paw detection?
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edited Nov 20 '10 at 15:50
Peter Mortensen
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Docker how to change repository name or rename image?
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docker image tag server:latest myname/server:latest
or
docker image tag d583c3ac45fd mynam...
What is your preferred style for naming variables in R? [closed]
...rs♦
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Rasmus BååthRasmus Bååth
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Set Additional Data to highcharts series
... or 'size' ?
– vishal
Nov 28 '13 at 10:54
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Are tuples more efficient than lists in Python?
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Mark HarrisonMark Harrison
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