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Convert a character digit to the corresponding integer in C

... As per other replies, this is fine: char c = '5'; int x = c - '0'; Also, for error checking, you may wish to check isdigit(c) is true first. Note that you cannot completely portably do the same for letters, for example: char c = 'b'; int x = c - 'a'; // x is now not necessarily 1 Th...
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What is the best way to programmatically detect porn images? [closed]

... This was written in 2000, not sure if the state of the art in porn detection has advanced at all, but I doubt it. http://www.dansdata.com/pornsweeper.htm PORNsweeper seems to have some ability to distinguish pictures of people from pictures of t...
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How do I compile a Visual Studio project from the command-line?

...rge C++ solution that is using Monotone , CMake , Visual Studio Express 2008, and custom tests. 6 Answers ...
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seek() function?

...many positions you will move; from_what defines your point of reference: 0: means your reference point is the beginning of the file 1: means your reference point is the current file position 2: means your reference point is the end of the file if omitted, from_what defaults to 0. Never forget t...
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Why switch is faster than if

... answered Jul 15 '11 at 10:56 DanielDaniel 25.2k1616 gold badges8484 silver badges128128 bronze badges ...
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Turn Pandas Multi-Index into column

...| edited Oct 21 '14 at 21:02 Will 9,68888 gold badges5959 silver badges7171 bronze badges answered Sep 8...
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How to get the max of two values in MySQL?

... | edited May 24 '19 at 10:13 answered Oct 14 '09 at 11:29 ...
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Maximum single-sell profit

...ry!), but it's helpful to see the algorithm evolve: 5 10 4 6 7 min 5 5 4 4 4 best (5,5) (5,10) (5,10) (5,10) (5,10) Answer: (5, 10) 5 10 4 6 12 min ...
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Show percent % instead of counts in charts of categorical variables

... geom_bar(aes(y = (..count..)/sum(..count..))) + ## version 3.0.0 scale_y_continuous(labels=percent) Here's a reproducible example using mtcars: ggplot(mtcars, aes(x = factor(hp))) + geom_bar(aes(y = (..count..)/sum(..count..))) + scale_y_continuous(labels...
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How to do this using jQuery - document.getElementById(“selectlist”).value

... 150 $('#selectlist').val(); ...