大约有 20,000 项符合查询结果（耗时：0.0457秒） [XML]
split string only on first instance of specified character
In my code I split a string based on _ and grab the second item in the array.
17 Answers
...
How do I get the filepath for a class in Python?
...u can use the inspect module, like this:
import inspect
inspect.getfile(C.__class__)
share
|
improve this answer
|
follow
|
...
How to sort two lists (which reference each other) in the exact same way
... of 10000 random ints): %timeit index = range(len(l1)); index.sort(key=l1.__getitem__); map(l1.__getitem__, index); map(l2.__getitem__, index) 100 loops, best of 3: 8.04 ms per loop (vs 9.17 ms, 9.07 ms for senderle's timits)
– Quantum7
Aug 12 '13 at 21:35
...
How to use filter, map, and reduce in Python 3
...
@Breezer actually i**3 will call i.__pow__(3) and i*i*i i.__mul__(i).__mul__(i) (or something like that). With ints it doesn't matter but with numpy numbers/custom classes it might even produce different results.
– syntonym
...
What is the difference between Class Path and Build Path
... these classes.
The virtual machine searches for and loads classes in this order:
bootstrap classes: the classes that are fundamental to the Java
Platform (comprising the public classes of the Java Class Library, and
the private classes that are necessary for this library to be
functional).
extensio...
Is there a range class in C++11 for use with range based for loops?
...C++ standard library does not have one, but Boost.Range has boost::counting_range, which certainly qualifies. You could also use boost::irange, which is a bit more focused in scope.
C++20's range library will allow you to do this via view::iota(start, end).
...
Search text in stored procedure in SQL Server
...lect distinct object_name(id)
from syscomments
where text like '%[ABD]%'
order by object_name(id)
share
|
improve this answer
|
follow
|
...
How to override the properties of a CSS class using another CSS class
...hat e.g. the rule
.background-none { background: none; }
wins simply by order, i.e. by being after an otherwise equally “powerful” rule. But this imposes restrictions and requires you to be careful in any reorganization of style sheets.
These are all examples of the CSS Cascade, a crucial bu...
import module from string variable
...
The __import__ function can be a bit hard to understand.
If you change
i = __import__('matplotlib.text')
to
i = __import__('matplotlib.text', fromlist=[''])
then i will refer to matplotlib.text.
In Python 2.7 and Python ...
How update the _id of one MongoDB Document?
I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get:
...