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Remove/hide a preference from the screen

I have an activity which extends PreferenceActivity. I'm loading preferences from the xml file. But in some cases i need completely hide one of the preferences from the screen based on my app state. There is a setEnabled method, but it's not exactly what i want. I want to remove that preference from...
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Match whitespace but not newlines

I sometimes want to match whitespace but not newline. 6 Answers 6 ...
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Why does one often see “null != variable” instead of “variable != null” in C#?

...ifference in the excecution speed for the order in which you state the condition? 9 Answers ...
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Can enums be subclassed to add new elements?

I want to take an existing enum and add more elements to it as follows: 15 Answers 15 ...
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How to get evaluated attributes inside a custom directive

...ttribute from my custom directive, but I can't find the right way of doing it. 5 Answers ...
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When to use setAttribute vs .attribute= in JavaScript?

... the quirksmode link below) if you want programmatic access in JavaScript. It should handle the different types of attributes (think "onload") correctly. Use getAttribute/setAttribute when you wish to deal with the DOM as it is (e.g. literal text only). Different browsers confuse the two. See Quirk...
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How can I change the color of my prompt in zsh (different from normal text)?

... output on a commandline, I want to change the color of my prompt, so that it is visibly different from the programs output. As I use zsh, can anyone give me a hint? ...
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Using curl POST with variables defined in bash script functions

When I echo I get this, which runs when I enter it into the terminal 7 Answers 7 ...
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Replace transparency in PNG images with white background

I've got some PNG images with transparency, and I need to create versions with the image layer composed onto a white background. I've tried various things with Image Magick "convert" operations, but either nothing happens at all or I get an error. I don't want to go to an intermediate JPG form bec...
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What are the differences between “=” and “

...ons in a braced list of expressions. Let’s not put too fine a point on it: the R documentation is (subtly) wrong [1]. This is easy to show: we just need to find a counter-example of the = operator that isn’t (a) at the top level, nor (b) a subexpression in a braced list of expressions (i.e. {...