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How to identify platform/compiler from preprocessor macros?

... See: http://predef.sourceforge.net/index.php This project provides a reasonably comprehensive listing of pre-defined #defines for many operating systems, compilers, language and platform standards, and standard libraries. ...
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How do I remove the old history from a git repository?

... I had to do git filter-branch --tag-name-filter cat -- --all to update tags. But I've also got older tags pointing to the old history that I want to delete. How can I get rid of all those old tags? If I don't delete them, then the older history doesn't disappear and I can ...
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Webrick as production server vs. Thin or Unicorn?

...e that has multiple components, and maybe one section is Rails, another is PHP, and rewrites are needed for both (i.e. rewrite old PHP paths to Rails) share | improve this answer | ...
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Passing command line arguments to R CMD BATCH

...st.Rout, will show that the argument 4 has been successfully passed to R: cat test.Rout > args <- commandArgs(trailingOnly = F) > myargument <- args[length(args)] > myargument <- sub("-","",myargument) > print(myargument) [1] "4" > q(save="no") > proc.time() user system...
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How to tell bash that the line continues on the next line

...th. What is the character or thing to be added to the line in order to indicate that the line continues on the next line? 3...
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How can I default a parameter to Guid.Empty in C#?

...lt to a new object creates a new object every time the method is called in PHP; but only creates one object for the entire program in Python. Really, I consider this to be one of the very few design flaws of Python. I'm somewhat glad C# (and VB.Net) avoided this issue by simply disallowing new obj...
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How to search for occurrences of more than one space between words in a line

...ase it's a good practice to add ? , like this .*?. It happened to me using PHP's PCRE – AlexanderMP Sep 21 '10 at 9:35 ...
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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?

...se the -s parameter that sets the maximum length of strings displayed. It catches all streams, so you might want to filter that somehow: strace -ewrite -p $PID 2>&1 | grep "write(1" shows only descriptor 1 calls. 2>&1 is to redirect STDERR to STDOUT, as strace writes to STDERR by...
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How to perform a mysqldump without a password prompt?

... to add a level of security, you should use a dedicated, non database specific, readonly user, and in no case the root user. It can be done like this: GRANT LOCK TABLES, SELECT ON *.* TO 'BACKUPUSER'@'%' IDENTIFIED BY 'PASSWORD'; – gadjou ...
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How does this checkbox recaptcha work and how can I use it?

... Here is my code running without problem in PHP: Client Side: <div class="g-recaptcha" data-sitekey="PUBLIC_KEY"></div> Server Side: if (isset($_POST['g-recaptcha-response'])) { $captcha = $_POST['g-recaptcha-response']; $privatekey = "SECRET_K...