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Filter rows which contain a certain string
I have to filter a data frame using as criterion those row in which is contained the string RTB .
4 Answers
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A semantics for Bash scripts?
...know, I've "learned" Bash by Googling every time I need some little thing. Consequently, I can patchwork together little scripts that appear to work. However, I don't really know what's going on, and I was hoping for a more formal introduction to Bash as a programming language. For example: What i...
How exactly does CMake work?
I'm not asking this for just myself. I hope this question will be a reference for the many newbies who like me, found it utterly perplexing about what exactly what was going on behind the scenes when for such a small CMakeLists.txt file
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What is Cache-Control: private?
When I visit chesseng.herokuapp.com I get a response header that looks like
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How does the const constructor actually work?
I've noticed it's possible to create a const constructor in Dart. In the documentation, it says that const word is used to denote something a compile time constant.
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How to pull request a wiki page on GitHub?
... wiki page on GitHub that isn't open for editing. Then I forked the project, edited it on "my end" and tried to do a pull request. It turns out, the wiki isn't in the project, and there isn't a way to commit changes to it.
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git: diff between file in local repo and origin
I want to find the differences between a file I have in my local repo vs what is in the origin master .
7 Answers
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Caveats of select/poll vs. epoll reactors in Twisted
Everything I've read and experienced ( Tornado based apps ) leads me to believe that ePoll is a natural replacement for Select and Poll based networking, especially with Twisted. Which makes me paranoid, its pretty rare for a better technique or methodology not to come with a price.
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How to extract a git subdirectory and make a submodule out of it?
I started a project some months ago and stored everything within a main directory.
In my main directory "Project" there are several subdirectories containing different things:
Project/paper contains a document written in LaTeX
Project/sourcecode/RailsApp contains my rails app.
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How to correctly use “section” tag in HTML5?
... trying to build a layout in HTML5 and after reading several different articles I'm just confused. I'm trying to get some input on how it should be used.
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