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How can I replace a newline (\n) using sed?

...ns not to do it on the last line as there should be one final newline). Finally the substitution replaces every newline with a space on the pattern space (which is the whole file). Here is cross-platform compatible syntax which works with BSD and OS X's sed (as per @Benjie comment): sed -e ':a' -...
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Singletons vs. Application Context in Android?

Recalling this post enumerating several problems of using singletons and having seen several examples of Android applications using singleton pattern, I wonder if it's a good idea to use Singletons instead of single instances shared through global application state (subclassing android.os.Applicat...
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What is a Context Free Grammar?

...y and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are? ...
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Where can I find a list of scopes for Google's OAuth 2.0 API? [closed]

...service. The Google OAuth2 playground, is another good source of info. Finally if you're interested in tracking changes to the discovery documents or don't want to read all the docs, there is an interesting online implementation by Gerwin Sturm. ...
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How to wrap text using CSS? [duplicate]

... great! i assume that the only "problem" here, is that you have to set manually the size of the container (100px in this example) – ymz Dec 26 '14 at 11:09 ...
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Git, rewrite previous commit usernames and emails

... This just made duplicates of all the commits with the email I wanted to change. Doesn't appear to rewrite history. @Olivier Verdier's solution worked for me. – Jake Wilson Nov 21 '17 at 16:10 ...
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How would one call std::forward on all arguments in a variadic function?

...mpiler I would do this with real variadic templates. How though, would I call std::forward on the arguments? 1 Answer ...
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“inconsistent use of tabs and spaces in indentation”

I'm trying to create an application in Python 3.2 and I use tabs all the time for indentation, but even the editor changes some of them into spaces and then print out "inconsistent use of tabs and spaces in indentation" when I try to run the program. ...
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How to create a new (and empty!) “root” branch?

...ository. By "root" branch I mean a branch that is entirely independent of all the other branches in the repository 1 . 4 A...
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WebRTC vs Websockets: If WebRTC can do Video, Audio, and Data, why do I need Websockets? [closed]

So I'm looking to build a chat app that will allow video, audio, and text. I spent some time researching into Websockets and WebRTC to decide which to use. Since there are plenty of video and audio apps with WebRTC, this sounds like a reasonable choice, but are there other things I should consider? ...