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cartesian product in pandas
...n unused column name, then add dummy columns with that name, merge, and finally drop the column on the result? Creating, as opposed to reading, data with pandas is just a pain
– Bananach
Oct 10 '19 at 7:31
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.NET / C# - Convert char[] to string
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Joel CoehoornJoel Coehoorn
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How do I determine file encoding in OS X?
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That's a function call you would use if you want to write a program. From the command line, just type ls -l@ <filename> to see what attributes are set for the file. To see the actual attribute, type xattr -p com.apple.TextEncoding <fil...
How do you use gcc to generate assembly code in Intel syntax?
...ax.
example: mov eax, 0xFF -> TRUE, mov eax, 0FFh -> FALSE.
That's all.
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PHP session lost after redirect
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First, carry out these usual checks:
Make sure session_start(); is called before any sessions are being called. So a safe bet would be to put it at the beginning of your page, immediately after the opening <?php declaration before anything else. Also ensure there are no whitespaces/tabs be...
Hidden Features of JavaScript? [closed]
...ert it to a real array if you want: "var argArray = Array.prototype.slice.call(arguments);" )
– Jacob Mattison
Jan 26 '09 at 21:37
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How to use php serialize() and unserialize()
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基于PECL OAuth打造微博应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...腾讯，搜狐，网易）的开发者，拿到属于你自己的CONSUMER_KEY和CONSUMER_SECRET（有时也被称作APP_*）。
下面开始！假定我们要开发一个类似Follow5和微博通的应用，简单点说就是把消息同时发送到多个微博平台，出于安全性的考虑，...
mysqli or PDO - what are the pros and cons? [closed]
...nvincing somebody works better with a killer feature. So there it is:
A really nice thing with PDO is you can fetch the data, injecting it automatically in an object. If you don't want to use an ORM (cause it's a just a quick script) but you do like object mapping, it's REALLY cool :
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Javascript - sort array based on another array
...to do with "optimization", unless the volume of data is guaranteed to be small (which may be the case here).
– Julien Royer
Nov 9 '12 at 9:36
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