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How to work with complex numbers in C?
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int main() {
double complex z1 = 1.0 + 3.0 * I;
double complex z2 = 1.0 - 4.0 * I;
printf("Working with complex numbers:\n\v");
printf("Starting values: Z1 = %.2f + %.2fi\tZ2 = %.2f %+.2fi\n", creal(z1), cimag(z1), creal(z2), cimag(z2));
double complex sum = z1 + z2;
pr...
How do you detect Credit card type based on number?
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29 Answers
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Remove empty strings from a list of strings
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12 Answers
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How to customize the background/border colors of a grouped table view cell?
...with the [UIColor colorWithPatternImage:] initializer). But I'll leave the 2.0 version of the answer here for anyone that needs it…
It's harder than it really should be. Here's how I did this when I had to do it:
You need to set the UITableViewCell's backgroundView property to a custom UIView ...
How do I pass parameters into a PHP script through a webpage?
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2 Answers
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How to understand nil vs. empty vs. blank in Ruby
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answered May 20 '09 at 16:14
Corban BrookCorban Brook
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How do I get the day of the week with Foundation?
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NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatte...
What breaking changes are introduced in C++11?
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The FDIS has a section for incompatibilities, at appendix C.2 "C++ and ISO C++ 2003".
Summary, paraphrasing the FDIS here, to make it (better) suitable as a SO answer. I added some examples of my own to illustrate the differences.
There are a few library-related incompatibilities w...
How do I see active SQL Server connections?
I am using SQL Server 2008 Enterprise. I want to see any active SQL Server connections, and the related information of all the connections, like from which IP address, connect to which database or something.
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