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How does the main() method work in C?

...es. Programmers noticed that they can pass extra arguments to a function, and nothing bad happens with their given compiler. This is the case if the calling conventions are such that: The calling function cleans up the arguments. The leftmost arguments are closer to the top of the stack, or to t...
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Volatile Vs Atomic [duplicate]

...rite -- such as i++, which is equivalent to i = i + 1, which does one read and one write -- is not atomic, since another thread may write to i between the read and the write. The Atomic classes, like AtomicInteger and AtomicReference, provide a wider variety of operations atomically, specifically i...
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Check if a string matches a regex in Bash script

...=~ ^regex$ ]] && echo "matched" || echo "did not match" where commands after && are executed if the test is successful, and commands after || are executed if the test is unsuccessful. Note this is based on the solution by Aleks-Daniel Jakimenko in User input date format verification...
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What is the difference/usage of homebrew, macports or other package installation tools? [closed]

...install Ruby on Mac OS X you might need MacPorts, so just go with MacPorts and you'll be happy. MacPorts is really stable, in 8 years I never had a problem with it, and my entire Unix ecosystem relay on it. If you are a PHP developer you can install the last version of Apache (Mac OS X uses 2.2), PH...
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Protecting executable from reverse engineering?

I've been contemplating how to protect my C/C++ code from disassembly and reverse engineering. Normally I would never condone this behavior myself in my code; however the current protocol I've been working on must not ever be inspected or understandable, for the security of various people. ...
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lose vim colorscheme in tmux mode

I'm running iterm2 and when I'm in tmux mode the colorscheme I have set in vim does not show up. Only the color scheme I've set in iterm. If I run vim from shell the colorscheme appears correct - its only when I'm in tmux mode. ...
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What is the difference between a map and a dictionary?

... values. Isn't a dictionary the same? What is the difference between a map and a dictionary 1 ? 11 Answers ...
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Why can't I use float value as a template parameter?

... The current C++ standard does not allow float (i.e. real number) or character string literals to be used as template non-type parameters. You can of course use the float and char * types as normal arguments. Perhaps the author is using a com...
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How to print number with commas as thousands separators?

I am trying to print an integer in Python 2.6.1 with commas as thousands separators. For example, I want to show the number 1234567 as 1,234,567 . How would I go about doing this? I have seen many examples on Google, but I am looking for the simplest practical way. ...
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Declaration/definition of variables locations in ObjectiveC?

Ever since starting to work on iOS apps and objective C I've been really puzzled by the different locations where one could be declaring and defining variables. On one hand we have the traditional C approach, on the other we have the new ObjectiveC directives that add OO on top of that. Could you fo...