大约有 10,600 项符合查询结果(耗时:0.0288秒) [XML]

https://stackoverflow.com/ques... 

How to calculate number of days between two given dates?

...tes a timedelta object. from datetime import date d0 = date(2008, 8, 18) d1 = date(2008, 9, 26) delta = d1 - d0 print(delta.days) The relevant section of the docs: https://docs.python.org/library/datetime.html. See this answer for another example. ...
https://stackoverflow.com/ques... 

Comparing two dictionaries and checking how many (key, value) pairs are equal

... def dict_compare(d1, d2): d1_keys = set(d1.keys()) d2_keys = set(d2.keys()) shared_keys = d1_keys.intersection(d2_keys) added = d1_keys - d2_keys removed = d2_keys - d1_keys modified = {o : (d1[o], d2[o]) for o in shar...
https://stackoverflow.com/ques... 

What's the fastest way to merge/join data.frames in R?

...in sqlite's main database. Thus the select statement that was shown reads d1 and d2 from the workspace into sqlite's main database clobbering the ones that were there with the indexes. As a result it does a join with no indexes. If you wanted to make use of the versions of d1 and d2 that were in ...
https://stackoverflow.com/ques... 

How can we make xkcd style graphs?

...ont_import(pattern="[H/h]umor") loadfonts() ### Set up the trial dataset d1 <- data.frame('type'=c('DROWNING','RADIATION','TOILET',"ELECTRICAL",'NOISE','PANTRY','YOUR FALLING ON OBJECTS','OBJECTS FALLING ON YOU','BOSS','FIRE','TRAVEL TO WORK'),'score'=c(2,2,3,6,6,6,11,14,21,26,30)) # we wil...
https://stackoverflow.com/ques... 

How do I detect what .NET Framework versions and service packs are installed?

A similar question was asked here , but it was specific to .NET 3.5. Specifically, I'm looking for the following: 13 Answe...
https://stackoverflow.com/ques... 

Font Awesome not working, icons showing as squares

...nt-awesome.min.css" rel="stylesheet"> I had similar issue with Amazon Cloudfront CDN but it got resolved after I started loading it from maxcdn share | improve this answer | ...
https://www.tsingfun.com/it/tech/1329.html 

廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术

...tbeat+NFS文件共享存储架构(主从模式) http://blog.chinaunix.net/uid-25266990-id-3803277.html DRBD使用gfs2,cman实现双主分布式文件存储方案 http://blog.sae.sina.com.cn/archives/3609 2.1搭建实验环境了 所需要的软件 REHL 6.4 drbd-8.4.6.tar.gz...
https://stackoverflow.com/ques... 

How do I get a UTC Timestamp in JavaScript?

...l differ. Observe (I'm in GMT +02:00 right now, and it's 07:50): > var d1 = new Date(); > d1.toUTCString(); "Sun, 18 Mar 2012 05:50:34 GMT" // two hours less than my local time > Math.floor(d1.getTime()/ 1000) 1332049834 > var d2 = new Date( d1.getUTCFullYear(), d1.getUTCMonth(), d1.g...
https://stackoverflow.com/ques... 

img tag displays wrong orientation

I have an image at this link: http://d38daqc8ucuvuv.cloudfront.net/avatars/216/2014-02-19%2017.13.48.jpg 14 Answers ...
https://stackoverflow.com/ques... 

What is the fastest factorial function in JavaScript? [closed]

...+) rval = rval * i; return rval; } Live at : http://jsfiddle.net/xMpTv/ My results show: - Recursive ~ 150 milliseconds - Iterative ~ 5 milliseconds.. share | improve this answer ...