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MongoDB not equal to
...y"})
db.test.find({'post': {$ne : ""}})
{ "_id" : ObjectId("4f68b1a7768972d396fe2268"), "author" : "you", "post" : "how to query" }
And now $not, which takes in predicate ($ne) and negates it ($not):
db.test.find({'post': {$not: {$ne : ""}}})
{ "_id" : ObjectId("4f68b19c768972d396fe2267"), "autho...
How to create a temporary directory and get the path / file name in Python
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Samuel Rossille
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answered Jul 11 '10 at 15:45
PhilippPhilipp
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Why does z-index not work?
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edited Oct 11 '19 at 12:38
LinusGeffarth
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a...
Html.Textbox VS Html.TextboxFor
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edited Sep 3 '14 at 9:21
answered May 6 '11 at 8:15
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How do android screen coordinates work?
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3 Answers
3
Active
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What is the difference between Python's list methods append and extend?
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5329
append: Appends object at the end.
x = [1, 2, 3]
x.append([4, 5])
print (x)
gives you: [1, ...
MySQL Fire Trigger for both Insert and Update
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3 Answers
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Numpy array dimensions
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513
It is .shape:
ndarray.shape
Tuple of array dimensions.
Thus:
>>> a.shape
(2, 2...