大约有 45,000 项符合查询结果(耗时:0.0641秒) [XML]

https://stackoverflow.com/ques... 

Calculating frames per second in a game

... 19 Answers 19 Active ...
https://stackoverflow.com/ques... 

Convert Year/Month/Day to Day of Year in Python

... 261 There is a very simple solution: from datetime import datetime day_of_year = datetime.now().tim...
https://stackoverflow.com/ques... 

How to get the input from the Tkinter Text Widget?

... 132 To get Tkinter input from the text box, you must add a few more attributes to the normal .get(...
https://stackoverflow.com/ques... 

How to return a part of an array in Ruby?

... 195 Yes, Ruby has very similar array-slicing syntax to Python. Here is the ri documentation for th...
https://stackoverflow.com/ques... 

Test if number is odd or even

... 17 Answers 17 Active ...
https://stackoverflow.com/ques... 

How to find the installed pandas version

...sion__: In [76]: import pandas as pd In [77]: pd.__version__ Out[77]: '0.12.0-933-g281dc4e' Pandas also provides a utility function, pd.show_versions(), which reports the version of its dependencies as well: In [53]: pd.show_versions(as_json=False) INSTALLED VERSIONS ------------------ commit:...
https://stackoverflow.com/ques... 

Why is 1/1/1970 the “epoch time”?

... Early versions of unix measured system time in 1/60 s intervals. This meant that a 32-bit unsigned integer could only represent a span of time less than 829 days. For this reason, the time represented by the number 0 (called the epoch) had to be set in the very recent pas...
https://stackoverflow.com/ques... 

pandas: filter rows of DataFrame with operator chaining

... 14 Answers 14 Active ...
https://stackoverflow.com/ques... 

How does the C code that prints from 1 to 1000 without loops or conditional statements work?

I've found C code that prints from 1 to 1000 without loops or conditionals : But I don't understand how it works. Can anyone go through the code and explain each line? ...
https://stackoverflow.com/ques... 

Waiting until two async blocks are executed before starting another block

... 10 Answers 10 Active ...