大约有 40,000 项符合查询结果（耗时：0.0590秒） [XML]
How to check Django version
...application. So I have two versions of Python, 2.6 and 2.7. Now I have installed Django. I could run the sample application for testing Django succesfuly. But how do I make sure whether Django uses the 2.6 or 2.7 version and what version of modules Django uses?
...
What is BSON and exactly how is it different from JSON?
...pes such as Date and binary which are not supported in JSON also provide ordered fields in order for it to be efficient for encoding and decoding within different languages.
In other word we can say BSON is just binary JSON ( a superset of JSON with some more data types, most importantl...
How to delete all Annotations on a MKMapView
Is there a simple way to delete all the annotations on a map without iterating through all the displayed annotations in Objective-c?
...
Cost of exception handlers in Python
...cit if as long as the condition is not met.
But it's all within the same order of magnitude and unlikely to matter either way. Only if the condition is actually met, then the if version is significantly faster.
share
...
How to get result of console.trace() as string in javascript with chrome or firefox?
...don't define names for functions and I also can not get their names with callee.caller.name .
6 Answers
...
What is the maximum length of a table name in Oracle?
...
It's actually based on the version in the compatible parameter. If you have a 12.2 DB with compatible set to 11.2.0, is still limits you to 30 chars.
– rtaft
Nov 15 '18 at 15:13
...
Is it possible to implement a Python for range loop without an iterator variable?
... I would not use it in this manner. I am unaware of any idiom as mentioned by Ryan. It can mess up your interpreter.
>>> for _ in xrange(10): pass
...
>>> _
9
>>> 1+2
3
>>> _
9
And according to Python grammar, it is an acceptable variable name:
identifier ::= ...
How do I trim whitespace from a string?
...l-accepted and meaningful names that the vast majority of languages use in order to be "unique" and "different" - strip instead of trim, isinstance instead of instanceof, list instead of array, etc, etc. Why not just use the names everyone is familiar with?? geez :P
– Gershom
...
What exactly is Python's file.flush() doing?
...your machine, that data is not on disk when the machine turns off.
So, in order to help with that you have the flush and fsync methods, on their respective objects.
The first, flush, will simply write out any data that lingers in a program buffer to the actual file. Typically this means that the d...
Splitting a list into N parts of approximately equal length
...
sending this output into 'zip' gives you your ordered list: zip(*chunkify(range(13), 3)) results in [(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 10, 11)]
– gens
Apr 13 '17 at 18:40
...