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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...can occur where you won't get a unique ID (please let me know if there are more):
Before this discussion, recall that the BSON Object ID consists of:
[4 bytes seconds since epoch, 3 bytes machine hash, 2 bytes process ID, 3 bytes counter]
Here are the three possibilities, so you judge for yoursel...
Update or Insert (multiple rows and columns) from subquery in PostgreSQL
...ut throwing an error (independently for each row). I think that would be a more complete solution to the question (for example: stackoverflow.com/a/6527838/781695)
– user
Dec 24 '14 at 5:08
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what are the .map files used for in Bootstrap 3.x?
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Are foreign keys really necessary in a database design?
...should not be a primary reason for FKs. (In fact in certain circumstances (More inserts than selects for example) maintaining a FK might be slower. )
– Robert
Mar 21 '10 at 17:28
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What does the filter parameter to createScaledBitmap do?
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JSON datetime between Python and JavaScript
...te_handler)
'"2010-04-20T20:08:21.634121"'
Which is ISO 8601 format.
A more comprehensive default handler function:
def handler(obj):
if hasattr(obj, 'isoformat'):
return obj.isoformat()
elif isinstance(obj, ...):
return ...
else:
raise TypeError, 'Object of ...
Ternary Operator Similar To ?:
.... I´ll think about that. My reason to avoid the very first code was to be more concise in not having a temporary val for a following if-statement: Do it intelligible in one line, just like one have it in mind.
– Peter Schmitz
Feb 9 '11 at 22:48
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How to show “Done” button on iPhone number pad
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Finding the type of an object in C++
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Using Python's os.path, how do I go up one directory?
...tes/mysite/mysite/../templates, which is perfectly fine, but just a little more cluttered. It also ensures that Django's reminder to use absolute paths is obeyed. If you're in a different situation that uses a relative path, you should use normpath to simplify your paths instead.
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