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What is the difference between :focus and :active?
What is the difference between the :focus and :active pseudo-classes?
7 Answers
7
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Get current time in seconds since the Epoch on Linux, Bash
...e , but in seconds since 1970 instead of the current date, hours, minutes, and seconds.
7 Answers
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Is it possible to hide the cursor in a webpage using CSS or Javascript?
...It doesn't have to be interactive at all. I tried with the cursor property and a transparent cursor image but I didn't make it work.
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How many random elements before MD5 produces collisions?
... quintillion 374 quadrillion 607 trillion 431 billion 768 million 211 thousand 456.
However if you keep all the hashes then the probability is a bit higher thanks to birthday paradox. To have a 50% chance of any hash colliding with any other hash you need 264 hashes. This means that to get a collis...
Understanding prototypal inheritance in JavaScript
...ease explain the difference between the following blocks of code? I tested and both blocks work. What's the best practice and why?
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XML Schema (XSD) validation tool? [closed]
... the best answer is Xerces, as it implements all of XSD, is cross-platform and widely used. I've created a small Java project on github to validate from the command line using the default JRE parser, which is normally Xerces. This can be used on Windows/Mac/Linux.
There is also a C++ version of Xe...
How can I color Python logging output?
...put, presumably because of its log system (because all the messages were standardized).
30 Answers
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Application_Start not firing?
I have an ASP.NET MVC (beta) application that I'm working on, and am having trouble figuring out if I'm doing something wrong, or if my Application_Start method in Global.asax.cs is in fact not firing when I try to debug the application.
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Check if a class is derived from a generic class
...on avoids the unnecessary recursion performance hit also. It's an elegant and beautiful solution to a meta-generic question.
– EnocNRoll - AnandaGopal Pardue
Jan 19 '09 at 18:26
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Checking for empty queryset in Django
...erly irrelevant so I do not get your point. They could as well make a thousand queries and it would still be totally irrelevant as this is not the point of this answer, with which I make clear that I agree.
– Wtower
Nov 4 '15 at 8:47
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