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Remove by _id in MongoDB console
... 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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fo...
MySQL get the date n days ago as a timestamp
...B will do part of it depending on what you want
mysql> SELECT DATE_SUB(NOW(), INTERVAL 30 day);
2009-06-07 21:55:09
mysql> SELECT TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day));
2009-06-07 21:55:09
mysql> SELECT UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day));
1244433347
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Java: Date from unix timestamp
...ent the
specified number of milliseconds since
the standard base time known as "the
epoch", namely January 1, 1970,
00:00:00 GMT.
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follo...
Python decorators in classes
...
Thanks Michael, only now saw that this is what I wanted.
– hcvst
Jan 18 '11 at 16:05
2
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Semantic Issue: Property's synthesized getter follows Cocoa naming convention for returning 'owned'
... to synthesize it in the .m file (I have done this before with no issues). Now, I came across this: "Semantic Issue: Property's synthesized getter follows Cocoa naming convention for returning 'owned' objects."
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Generic deep diff between two objects
...d to format diff object in arbitrary way based on passed primitive values (now this job is done by "compareValues" method).
var deepDiffMapper = function () {
return {
VALUE_CREATED: 'created',
VALUE_UPDATED: 'updated',
VALUE_DELETED: 'deleted',
VALUE_UNCHANGED: 'unchanged',
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How to implement a queue with three stacks?
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SUMMARY
O(1) algorithm is known for 6 stacks
O(1) algorithm is known for 3 stacks, but using lazy evaluation which in practice corresponds to having extra internal data structures, so it does not constitute a solution
People near Sedgewick have confirm...
Multiple variables in a 'with' statement?
...ng contextlib.nested:
Deprecated since version 2.7: The with-statement now supports this
functionality directly (without the confusing error prone quirks).
See Rafał Dowgird's answer for more information.
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How to retrieve a module's path?
I want to detect whether module has changed. Now, using inotify is simple, you just need to know the directory you want to get notifications from.
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How can I filter a date of a DateTimeField in Django?
...n't work with datetimefields. The second alternative works ;). If someone knows another method please answer
– Xidobix
Aug 23 '09 at 4:14
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