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What is more efficient? Using pow to square or just multiply it with itself?
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84
I tested the performance difference between x*x*... vs pow(x,i) for small i using this code:
#i...
How to validate an email address using a regular expression?
...-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])
or:
(?:[a-z0-9!#$%&'*+...
How to automatically generate a stacktrace when my program crashes
...s gets you this output:
$ ./test
Error: signal 11:
./test(handler+0x19)[0x400911]
/lib64/tls/libc.so.6[0x3a9b92e380]
./test(baz+0x14)[0x400962]
./test(bar+0xe)[0x400983]
./test(foo+0xe)[0x400993]
./test(main+0x28)[0x4009bd]
/lib64/tls/libc.so.6(__libc_start_main+0xdb)[0x3a9b91c4bb]
./test[0x40086a]...
How to run a single test from a rails test suite?
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answered Oct 1 '09 at 23:44
DarrylDarryl
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How do I space out the child elements of a StackPanel?
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Sergey AldoukhovSergey Aldoukhov
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Convert xlsx to csv in Linux with command line
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246
The Gnumeric spreadsheet application comes with a command line utility called ssconvert that ca...
How to retrieve a module's path?
...restisorestis
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EF Code First “Invalid column name 'Discriminator'” but no inheritance
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Amirhossein Mehrvarzi
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answered Jul 5 '11 at 18:12
Marcelo CalbucciMarcel...
How to detect page zoom level in all modern browsers?
...dth uses CSS pixels--thanks to Quirksmode widths)
FF3.6: no known method
FF4+: media queries binary search (see below)
WebKit: https://www.chromestatus.com/feature/5737866978131968 (thanks to Teo in the comments)
WebKit: measure the preferred size of a div with -webkit-text-size-adjust:none.
WebKit:...
How to add a filter class in Spring Boot?
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Haim RamanHaim Raman
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