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Can I use an OR in regex without capturing what's enclosed?

I'm using rubular.com to build my regex, and their documentation describes the following: 4 Answers ...
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What are CFI directives in Gnu Assembler (GAS) used for?

There seem to be a .CFI directive after every line and also there are wide varities of these ex., .cfi_startproc , .cfi_endproc etc.. more here . ...
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How do I undo a checkout in git?

I just checked out an earlier commit from my local git repo. I haven't made any changes to it, I was just looking at it. Now I want to go back to my latest commit - how do I do that? ...
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Regex for numbers only

I haven't used regular expressions at all, so I'm having difficulty troubleshooting. I want the regex to match only when the contained string is all numbers; but with the two examples below it is matching a string that contains all numbers plus an equals sign like "1234=4321". I'm sure there's a way...
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Control the size of points in an R scatterplot?

In R, the plot() function takes a pch argument that controls the appearance of the points in the plot. I'm making scatterplots with tens of thousands of points and prefer a small, but not too small dot. Basically, I find pch='.' to be too small, but pch=19 to be too fat. Is there somethin...
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What is the canonical way to determine commandline vs. http execution of a PHP script?

I have a PHP script that needs to determine if it's been executed via the command-line or via HTTP, primarily for output-formatting purposes. What's the canonical way of doing this? I had thought it was to inspect SERVER['argc'] , but it turns out this is populated, even when using the 'Apache 2.0 ...
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Do I encode ampersands in ?

I'm writing code that automatically generates HTML, and I want it to encode things properly. 4 Answers ...
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In git, what is the difference between merge --squash and rebase?

I'm new to git and I'm trying to understand the difference between a squash and a rebase. As I understand it you perform a squash when doing a rebase. ...
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How do I get python's pprint to return a string instead of printing?

In other words, what's the sprintf equivalent to pprint? 5 Answers 5 ...
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Is it OK to use Gson instance as a static field in a model bean (reuse)?

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