大约有 11,287 项符合查询结果（耗时：0.0219秒） [XML]
Is there a standardized method to swap two variables in Python?
In Python, I've seen two variable values swapped using this syntax:
7 Answers
7
...
Representing graphs (data structure) in Python
...e neatly represent a graph in Python ? (Starting from scratch i.e. no libraries!) What data structure (e.g. dicts/tuples/dict(tuples)) will be fast but also memory efficient? One must be able to do various graph operations on it.
As pointed out, the various graph representations might he...
How do you compare two version Strings in Java?
Is there a standard idiom for comparing version numbers? I can't just use a straight String compareTo because I don't know yet what the maximum number of point releases there will be. I need to compare the versions and have the following hold true:
...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
... C++, it is at first very confusing that C++ has three ways to refer to members of a class: a::b , a.b , and a->b . When do I use which one of these operators?
...
Python element-wise tuple operations like sum
...
import operator
tuple(map(operator.add, a, b))
share
|
improve this answer
|
follow
|
...
Bold words in a string of strings.xml in Android
I have a long text in one of the strings at strings.xml. I want to make bold and change the color of some words in that text.
...
How can I update the current line in a C# Windows Console App?
When building a Windows Console App in C#, is it possible to write to the console without having to extend a current line or go to a new line? For example, if I want to show a percentage representing how close a process is to completion, I'd just like to update the value on the same line as the cur...
Days between two dates? [duplicate]
What's the shortest way to see how many full days have passed between two dates?
Here's what I'm doing now.
4 Answers
...
How to do an update + join in PostgreSQL?
Basically, I want to do this:
9 Answers
9
...
Transpose/Unzip Function (inverse of zip)?
...! Provided you use the special * operator.
>>> zip(*[('a', 1), ('b', 2), ('c', 3), ('d', 4)])
[('a', 'b', 'c', 'd'), (1, 2, 3, 4)]
The way this works is by calling zip with the arguments:
zip(('a', 1), ('b', 2), ('c', 3), ('d', 4))
… except the arguments are passed to zip directly (...