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Remove by _id in MongoDB console
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Very close. This will work:
db.test_users.deleteOne( {"_id": ObjectId("4d512b45cc9374271b02ec4f")});
i.e. you don't need a new for the ObjectId.
Also, note that in some drivers/tools, remove() is now deprecated and deleteOne or deleteMany should be used instead.
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Empty set literal?
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541
No, there's no literal syntax for the empty set. You have to write set().
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Calling Objective-C method from C++ member function?
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204
You can mix C++ with Objective-C if you do it carefully. There are a few caveats but generally s...
How to use filter, map, and reduce in Python 3
...erstand...
– Minato
Nov 8 '18 at 12:44
1
A "quick fix" (read: hack) is to use list(map...) but no...
How do I get the real .height() of a overflow: hidden or overflow: scroll div?
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edited Nov 30 '16 at 13:41
Mosh Feu
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answer...
How do I print the elements of a C++ vector in GDB?
...will produce an output similar to:
$1 = std::vector of length 3, capacity 4 = {10, 20, 30}
To achieve above, you need to have gdb 7 (I tested it on gdb 7.01) and some python pretty-printer. Installation process of these is described on gdb wiki.
What is more, after installing above, this works w...
Why is “if not someobj:” better than “if someobj == None:” in Python?
... obj in ['', (), [], {}, 0, 0., A(), B(), C(), D(), None]:
... print '%4s: bool(obj) -> %5s, obj == None -> %5s, obj is None -> %5s' % \
... (repr(obj), bool(obj), obj == None, obj is None)
'': bool(obj) -> False, obj == None -> False, obj is None -> False
(): bool(...
How to add a custom loglevel to Python's logging facility
...log level.
– Colonel Panic
Aug 15 '14 at 18:54
2
Certainly much more informative than the current...
Run function from the command line
...déric HamidiFrédéric Hamidi
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