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How to detect internet speed in JavaScript?
...ed bigger than it actually is. Another option is using uncompressible file format, e.g. jpg. (thanks Rauli Rajande for pointing this out and Fluxine for reminding me)
The cache buster mechanism described above might not work with some CDN servers, which can be configured to ignore query string param...
How to decide font color in white or black depending on background color?
...ce with W3C guidelines in some circumstances. Herewith I derive a modified form that always chooses the highest contrast based on the guidelines. If you don't need to conform to W3C rules then I'd stick with the simpler formula above.
The formula given for contrast in the W3C Recommendations is (L1...
What's the difference between backtracking and depth first search?
...ing is a more general purpose algorithm.
Depth-First search is a specific form of backtracking related to searching tree structures. From Wikipedia:
One starts at the root (selecting some node as the root in the graph case) and explores as far as possible along each branch before backtracking....
Using an HTML button to call a JavaScript function
...:
if(navigator.appName == 'Netscape')
{
vesdiameter = document.forms['Volume'].elements['VesDiameter'].value;
// more stuff snipped
}
else
{
vesdiameter = eval(document.all.Volume.VesDiameter.value);
// more stuff snipped
}
I'm on Chrome, so navigator...
JSON datetime between Python and JavaScript
I want to send a datetime.datetime object in serialized form from Python using JSON and de-serialize in JavaScript using JSON. What is the best way to do this?
...
Strange \n in base64 encoded string in Ruby
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
Convert SVG image to PNG with PHP
...g
);
}
$im->readImageBlob($svg);
/*png settings*/
$im->setImageFormat("png24");
$im->resizeImage(720, 445, imagick::FILTER_LANCZOS, 1); /*Optional, if you need to resize*/
/*jpeg*/
$im->setImageFormat("jpeg");
$im->adaptiveResizeImage(720, 445); /*Optional, if you need to resi...
Is there XNOR (Logical biconditional) operator in C#?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
Https Connection Android
...ements javax.net.ssl.X509TrustManager, yet none of the methods actually perform any work, get a sample here.
Good Luck!
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Test if a class has an attribute?
...
@Marc- I agree about that the difference in performance would probably not be noticeable in a unit test. I'd get the attribute if I needed to use it, which as you say is the scenario in most cases. I recently used IsDefined in a framework I was writing to exclude a column...