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Interactive HTML5 parabola on Canvas

Created by James on November 09, 2013 20:54:03    Last update: November 09, 2013 20:54:03
This page draws an interactive parabola on HTML5 Canvas.  <!DOCTYPE HTML> <html> <head> <...

How to compile Bootstrap LESS (a bunch of LESS files)

Created by James on October 16, 2013 09:14:24    Last update: October 16, 2013 09:14:24
The initial attempt was to compile the bunch of LESS files with: lessc less/* But then I got errors like: NameError: variable @line-height-computed is undef... The order of LESS files listed is important. Variables are defined in variables.less , so it should be listed first. For Bootstrap, the ordering is defined in bootstrap.less . So all you have to do is ( this is the right way ): lessc bootstrap.less bootstrap-compiled.css Just for the reference, this is the content of bpptstrap.css : /*! * Bootstrap v3.0.0 * * Copyright 2...

Use Tsung to load test web application

Created by Dr. Xi on September 23, 2013 09:00:22    Last update: September 23, 2013 09:17:55

grep regex examples

Created by Dr. Xi on March 28, 2011 11:11:33    Last update: March 28, 2011 11:13:21
grep is a versatile command with many variations (grep, egrep, fgrep, then various implementations). It uses a regula expression (regex) pattern to filter input. But then there are basic and extended flavors of regex - leading to even more confusion. And, beware that there are lots of bad examples of regex in the wild... There are two critical questions to ask when you use grep: which grep implementation are you using? what is the flavor of the regex? Here are some examples for gnu grep v2.7: # Find all numbers (no decimal point), basic regex... Use the -o flag to show only the matching part instead of the whole matching line: grep -o -E '\b[0-9]{2}\b' The good thing about the gnu grep is that it...
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