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How to remove newlines from beginning and end of a string?
I have a string that contains some text followed by a blank line. What's the best way to keep the part with text, but remove the whitespace newline from the end?
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Automatically expanding an R factor into a collection of 1/0 indicator variables for every factor le
I have an R data frame containing a factor that I want to "expand" so that for each factor level, there is an associated column in a new data frame, which contains a 1/0 indicator. E.g., suppose I have:
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dynamically add and remove view to viewpager
(I figured out a solution - please see my post in the Answer section below.)
8 Answers
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linux上SVN conflict冲突解决的办法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...突了。
这时，会生成几个文件：
a.txt a.txt.mine a.txt.r6328 a.txt.r6336
其中a.txt中包含了工程师A、B的所有修改，以<<<<<<<、=======、>>>>>>>分隔。
a.txt.mine是工程师B的修改，也就是未update前的a.txt。
a.txt.r6328 是工程师A提交前...
How many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
In Firefox 3, the answer is 6 per domain: as soon as a 7th XmlHttpRequest (on any tab) to the same domain is fired, it is queued until one of the other 6 finish.
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LEFT OUTER JOIN in LINQ
How to perform left outer join in C# LINQ to objects without using join-on-equals-into clauses? Is there any way to do that with where clause?
Correct problem:
For inner join is easy and I have a solution like this
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Converting from longitude\latitude to Cartesian coordinates
I have some earth-centered coordinate points given as latitude and longitude ( WGS-84 ).
9 Answers
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Google Analytics - Failed to load resource: http://www.google-analytics.com/ga.js
I've been noticing this error on Chrome's console for a while now:
8 Answers
8
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How to inflate one view with a layout
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14 Answers
14
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常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...中经常会用到的一些Linux命令进行一下详解。logout,shutdown,reboot,useradd,passwd,ls,ll,cd,mkdir,vi,cp,rm,mv,chmod,chown,find,grep,tail,tar,gzip,fdisk,kill,netstat等。一、注销，关机，重启，新建用户、删除用户
1. 注销系统的命令
logout 、exit
这两个命...