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Compare double to zero using epsilon
...32k, much closer to zero than the epsilon around one we calculated above!
Now this is a toy floating point model that does not reflect all the quirks of a real floating point system , but the ability to reflect values smaller than epsilon is reasonably similar with real floating point values.
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How to check if a URL is valid
...:isbn:0451450523" =~ URI::regexp
=> 0
That being said, as far as I know, Ruby doesn't have a default way to parse URLs , so you'll most likely need a gem to do so. If you need to match URLs specifically in HTTP or HTTPS format, you could do something like this:
uri = URI.parse(my_possible_ur...
Transparent background with three.js
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I posted the comment before trying. Now that I have tried it, it doesn't look like it, but the geometry I'm rendering is really small. I was asking because I was planning on using this in larger projects. Anyway, it doesn't seem to have an impact, or at least i...
Align contents inside a div
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If you don't know the div width, which is often the case, this solution works perfectly in all browsers: matthewjamestaylor.com/blog/…
– Artem Russakovskii
Jan 28 '10 at 8:35
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How to remove specific value from array using jQuery
....indexOf(v), 1); }
var a = ['a','b','c'];
a.remove('c'); //value of "a" is now ['a','b']
Adding is simplera.push('c')
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How do I enable language extensions from within GHCi?
...e you referring to autocompletion within one's text editor? If so, do you know if this is possible with vim?
– identity
Sep 25 '12 at 15:43
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Regex how to match an optional character
I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not.
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Python argparse: default value or specified value
...ring as default) and "" (empty string as entered by user). In the code for now I'm using the default and since I need to do some ops, I have something like this self.foo = (args.bar or some_else_source).upper(). It will break on None object AFAIUC.
– 0andriy
Au...
How to “comment-out” (add comment) in a batch/cmd?
...d to edit this file before running it! Check the instructions inside
ECHO Now press ctrl-c to interrupt execution or enter to continue
PAUSE
REM erase the section above once you have customised the file
python executed1.py
ECHO Skipping some stuff now
GOTO End
python skipped1.py
python skipped2.py
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Does JavaScript have a built in stringbuilder class?
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I didn't know push could accept multiple arguments. The random things you learn.
– Carcigenicate
Mar 16 '16 at 22:33
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