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What is the !! (not not) operator in JavaScript?
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This is used to convert truthy values to boolean true, and falsy values too boolean false.
– thetoolman
Jul 16 '12 at 3:53
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Get content uri from file path in android
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thanks! second method works fine on 1.6, 2.1 and 2.2 but first one only on 2.2
– mishkin
Nov 30 '10 at 2:45
29
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jQuery AJAX cross domain
Here are two pages, test.php and testserver.php.
14 Answers
14
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Adding information to an exception?
...ay, you'd need to do something along these lines to preserve the traceback and not hardcode the type of exception in function bar(). Also note that there will be the line:
During handling of the above exception, another exception occurred:
in the traceback messages displayed.
# for Python 3.x
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How to prevent IFRAME from redirecting top-level window
...ozilla.org/en-US/docs/Web/API/Window.onbeforeunload
In HTML5 you can use sandbox property. Please see Pankrat's answer below.
http://www.html5rocks.com/en/tutorials/security/sandboxed-iframes/
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Matching a space in regex
... space).
If you're looking for one or more, it's " *" (that's two spaces and an asterisk) or " +" (one space and a plus).
If you're looking for common spacing, use "[ X]" or "[ X][ X]*" or "[ X]+" where X is the physical tab character (and each is preceded by a single space in all those examples)...
Why are C# 4 optional parameters defined on interface not enforced on implementing class?
...ks for the great question!
Suppose you have an interface as you describe, and a hundred classes that implement it. Then you decide to make one of the parameters of one of the interface's methods optional. Are you suggesting that the right thing to do is for the compiler to force the developer to fi...
Restore Eclipse subversion project connection
... options. From the shell, I can still update the project using the svn command line tools, so I know that the svn credentials still work. Other projects under subversion in the same copy of Eclipse still work.
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How to vertically align into the center of the content of a div with defined width/height?
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I have researched this a little and from what I have found you have four options:
Version 1: Parent div with display as table-cell
If you do not mind using the display:table-cell on your parent div, you can use of the following options:
.area{
height...
Why we should not use protected static in java
...able exists at class level, it does not exist separately for each instance and it does not have an independent existence in classes which extend me.
Think about what protected means:
This variable can be seen by this class, classes in the same package and classes which extend me.
The two mea...