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Why implement interface explicitly?
So, what exactly is a good use case for implementing an interface explicitly?
11 Answers
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Checking if a variable is not nil and not zero in ruby
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edited Jul 18 '11 at 9:45
answered Oct 31 '08 at 0:36
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Variable's scope in a switch case [duplicate]
I think I don't understand how the scope works in a switch case.
7 Answers
7
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Difference between thread's context class loader and normal classloader
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Each class will use its own classloader to load other classes. So if ClassA.class references ClassB.class then ClassB needs to be on the classpath of the classloader of ClassA, or its parents.
The thread context classloader is the current class...
Make child visible outside an overflow:hidden parent
In CSS the overflow:hidden is set on parent containers in order to allow it to expand with the height of their floating children.
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How and why does 'a'['toUpperCase']() in JavaScript work?
...t came across some code which I did not understood at first. So I debugged it and came to this finding:
12 Answers
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What does `kill -0 $pid` in a shell script do?
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sending the signal 0 to a given PID just checks if any process with the given PID is running and you have the permission to send a signal to it.
For more information see the following manpages:
kill(1)
$ man 1 kill
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If sig is 0, then no signal is sent, but error checking is still pe...
Making custom right-click context menus for my web-app
I've a few websites like google-docs and map-quest that have custom drop down menus when you right-click. Somehow they override the browser's behavior of drop-down menu, and I'm now sure exactly how they do it. I found a jQuery plugin that does this, but I'm still curious about a few things:
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Check whether HTML element has scrollbars
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I found this somewhere a couple of weeks ago. It worked for me.
var div = document.getElementById('container_div_id');
var hasHorizontalScrollbar = div.scrollWidth > div.clientWidth;
var hasVerticalScrollbar = div.scrollHeight > div.clientHeight;
/* you'll get t...
How can I determine the direction of a jQuery scroll event?
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edited Mar 21 '13 at 17:50
user372743
answered Dec 1 '10 at 17:04
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