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How to check if object (variable) is defined in R?
I'd like to check if some variable is defined in R - without getting an error. How can I do this?
6 Answers
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Android Preferences: How to load the default values when the user hasn't used the preferences-screen
I am using a PreferenceActivity to let the user set some values.
I am feeding it the xml file with the defined preferences.
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difference between iframe, embed and object elements
HTML5 defines several embedded content elements, which, from a bird's-eye view, seem to be very similar to the point of being largely identical.
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How to make an app's background image repeat
I have set a background image in my app, but the background image is small and I want it to be repeated and fill in the whole screen. What should I do?
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How to delete an old/unused Data Model Version in Xcode
How can I delete an old Data Model in Xcode? The option is disabled on the menu. (The models I want to delete have not been released to the public - they are interim development models.)
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Does a const reference class member prolong the life of a temporary?
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How to read the Stock CPU Usage data
On Ice Cream Sandwich, an option in the Developer Options is "Show CPU Usage", which adds an overlay on the screen (see screenshot below).
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Get timezone from DateTime
Does the .Net DateTime contain information about time zone where it was created?
7 Answers
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What's in an Eclipse .classpath/.project file?
We recently had an issue with an Eclipse project for one of our team members. Tomcat was not deploying JARs of the application.
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C# Thread safe fast(est) counter
What is the way to obtain a thread safe counter in C# with best possible performance?
5 Answers
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