大约有 30,000 项符合查询结果(耗时:0.1815秒) [XML]

https://stackoverflow.com/ques... 

Should I use multiplication or division?

... Python: time python -c 'for i in xrange(int(1e8)): t=12341234234.234 / 2.0' real 0m26.676s user 0m25.154s sys 0m0.076s time python -c 'for i in xrange(int(1e8)): t=12341234234.234 * 0.5' real 0m17.932s user 0m16.481s...
https://stackoverflow.com/ques... 

How to Customize the time format for Python logging?

...g package and plan to use it for my project. I would like to customize the time format to my taste. Here is a short code I copied from a tutorial: ...
https://stackoverflow.com/ques... 

How do I time a method's execution in Java?

Most of the searches on Google return results for timers that schedule threads and tasks, which is not what I want. 40 Answ...
https://stackoverflow.com/ques... 

Get program execution time in the shell

...hell under a few different conditions, and be able to output the execution time of each execution. 10 Answers ...
https://stackoverflow.com/ques... 

How to calculate the time interval between two time strings

I have two times, a start and a stop time, in the format of 10:33:26 (HH:MM:SS). I need the difference between the two times. I've been looking through documentation for Python and searching online and I would imagine it would have something to do with the datetime and/or time modules. I can't ge...
https://stackoverflow.com/ques... 

How do I get the current date and time in PHP?

Which PHP function can return the current date/time? 38 Answers 38 ...
https://stackoverflow.com/ques... 

How to print time in format: 2009‐08‐10 18:17:54.811

What's the best method to print out time in C in the format 2009‐08‐10 
18:17:54.811 ? 7 Answers ...
https://stackoverflow.com/ques... 

Get current time in seconds since the Epoch on Linux, Bash

...ou can do with date(shamelessly copied from date --help). Show the local time for 9AM next Friday on the west coast of the US date --date='TZ="America/Los_Angeles" 09:00 next Fri' Better yet, take some time to read the man page http://man7.org/linux/man-pages/man1/date.1.html ...
https://stackoverflow.com/ques... 

Regex expressions in Java, \\s vs. \\s+

...tation): Greedy quantifiers X? X, once or not at all X* X, zero or more times X+ X, one or more times X{n} X, exactly n times X{n,} X, at least n times X{n,m} X, at least n but not more than m times Reluctant quantifiers X?? X, once or not at all X*? X, zero or more times X+? X, one or mo...
https://stackoverflow.com/ques... 

Split comma-separated strings in a column into separate rows

...s dupe target (tagged with r-faq). As of today, it has been answered three times offering 6 different approaches but is lacking a benchmark as guidance which of the approaches is the fastest1. The benchmarked solutions include Matthew Lundberg's base R approach but modified according to Rich Scr...