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What is a good Hash Function?
...( h ^ p[i] ) * 0x01000193;
return h;
}
unsigned long long fnv_hash_1a_64 ( void *key, int len ) {
unsigned char *p = key;
unsigned long long h = 0xcbf29ce484222325ULL;
int i;
for ( i = 0; i < len; i++ )
h = ( h ^ p[i] ) * 0x100000001b3ULL;
return h;
}
Edit:
La...
Escape a dollar sign in string interpolation
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to validate an email address in PHP
...1\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{...
How to check if object (variable) is defined in R?
... looking for exists. Keep in mind that using exists with names used by R's base packages would return true regardless of whether you defined the variable:
> exists("data")
[1] TRUE
To get around this (as pointed out by Bazz; see ?exists), use the inherits argument:
> exists("data", inherit...
Rails ActionMailer - format sender and recipient name/email address
...ommended in headers as well. I found that RFC2047 provides a mechanism for base64 encoding such values.
– William Denniss
Dec 6 '11 at 23:51
...
Remove border radius from Select tag in bootstrap 3
... background-repeat: no-repeat;
background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA4AAAAMCAYAAABSgIzaAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyJpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldG...
Any reason to clean up unused imports in Java, other than reducing clutter?
...lain this. After attempting to increase memory settings (this is running a 64 bit JVM on a 64 bit CentOS!) to something well beyond where the clients could compile, I examined the checkins one by one.
There was an improper import that a developer had used and abandoned (they used the class, auto-im...
Objective-C for Windows
...ers -L /GNUstep/GNUstep/System/Library/Libraries -std=c99 -lobjc -lgnustep-base -fconstant-string-class=NSConstantString
Finally, from the command prompt, type helloworld to run it
All the best, and have fun with Objective-C!
NOTES:
I used the default install path - adjust your command line ...
How to determine the memory footprint (size) of a variable?
... not definate. It can depend apparently on the php version and possibly on 64/32 bit.
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Get a list of all threads currently running in Java
...ick'n'dirty test showed, it's about 70-80 times faster than the stacktrace-based solution. For monitoring, a small performance imprint is essential, as you you'll want to keep the effects on the monitored system as small as possible (Heisenberg strikes again :) For debugging, where you may need more...