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What is the difference between save and insert in Mongo DB?
... \
Doc Having _id in collection Doc Not Having _id
-> E11000 duplicate key ->Insert a new doc inside the collection.
error index:
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Repeat string to certain length
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answered Aug 2 '10 at 19:30
Jason ScheirerJason Scheirer
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Calling shell functions with xargs
...the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
You can use the builtin printf instead of the external seq:
printf "n%04g\n" {1..100} | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
Also, using return 0 a...
UIPanGestureRecognizer - Only vertical or horizontal
... of translationInView.
– Hejazi
May 10 '14 at 14:14
19
@JoeBlow A UISwipeGestureRecognizer is an ...
How to use a dot “.” to access members of dictionary?
...l return None.
– mic_e
Aug 1 '16 at 10:45
Recommend adding getstate and setstate so that deep copy and other systems c...
How to include() all PHP files from a directory?
...ntain a class
– Nico Haase
Jul 4 at 10:42
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efficient circular buffer?
...
>>> import collections
>>> d = collections.deque(maxlen=10)
>>> d
deque([], maxlen=10)
>>> for i in xrange(20):
... d.append(i)
...
>>> d
deque([10, 11, 12, 13, 14, 15, 16, 17, 18, 19], maxlen=10)
There is a recipe in the docs for deque that is si...
Oracle “(+)” Operator
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answered Oct 26 '10 at 4:54
OMG PoniesOMG Ponies
289k6868 gold badges480480 silver badges480480 bronze badges
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How to initialize all members of an array to the same value?
...'s no easy way.
Don't overlook the obvious solution, though:
int myArray[10] = { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 };
Elements with missing values will be initialized to 0:
int myArray[10] = { 1, 2 }; // initialize to 1,2,0,0,0...
So this will initialize all elements to 0:
int myArray[10] = { 0 }...
How do I concatenate two lists in Python?
...>> 2).
– cs95
Jun 4 '19 at 14:10
@cs95 slow compared to what?
– Moberg
Ap...