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What is token-based authentication?
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Alex MartelliAlex Martelli
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How do I call Objective-C code from Swift?
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1418
Using Objective-C Classes in Swift
If you have an existing class that you'd like to use, p...
Generate MD5 hash string with T-SQL
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answered Aug 19 '10 at 20:40
Konstantin TarkusKonstantin Tarkus
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微博为什么限制140字(附短信70字限制考) - 闲聊区 - 清泛IT社区，为创新赋能！
...易微博的动机最不纯，因为它的字数限制不是传说中的140字，而是163个字。当年觉得很可爱，于是就注册了，之后再也没登录过。今天在人人网转发状态，提示我超过140字了，突然就好奇大家都在凑什么热闹，为什么除了网易微...
How to convert DateTime to/from specific string format (both ways, e.g. given Format is “yyyyMMdd”)?
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14 Answers
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Should I use multiplication or division?
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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
sys 0m0.048s
multiplication is 33% faster...
How to shrink/purge ibdata1 file in MySQL
...base.html
You have probably seen this:
http://bugs.mysql.com/bug.php?id=1341
By using the command ALTER TABLE <tablename> ENGINE=innodb or OPTIMIZE TABLE <tablename> one can extract data and index pages from ibdata1 to separate files. However, ibdata1 will not shrink unless you do the ...
How to split strings across multiple lines in CMake?
...: 2.8.9
Debian Wheezy-backports: 2.8.11
Debian Jessy (2015): 3.0.2
Ubuntu 14.04 (LTS): 2.8.12
Ubuntu 15.04 : 3.0.2
Mac OSX : cmake-3 available through Homebrew, Macports and Fink
Windows: cmake-3 available through Chocolatey
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How to learn R as a programming language [closed]
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4 Answers
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What does the explicit keyword mean?
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3415
The compiler is allowed to make one implicit conversion to resolve the parameters to a functio...