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Groovy / grails how to determine a data type?

... To determine the class of an object simply call: someObject.getClass() You can abbreviate this to someObject.class in most cases. However, if you use this on a Map it will try to retrieve the value with key 'class'. Because of this, I always use getClass() even thou...
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What is the difference between DSA and RSA?

...being a bit more complex than, but related to El Gamal. Note that nearly all the calculations are mod q, and hence are much faster. But, In contrast to RSA, DSA can be used only for digital signatures DSA Security The presence of a subliminal channel exists in many schemes (any that need a ran...
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How to center align the cells of a UICollectionView?

...nt, you could adjust that one too, if you want to center the content vertically in the screen. share | improve this answer | follow | ...
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How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version

I am trying to use Notepad++ as my all-in-one tool edit, run, compile, etc. 51 Answers ...
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How do I force a UITextView to scroll to the top every time I change the text?

...here's too much hoop jumping to get things to behave the way they automatically should in most cases. – John Contarino Jun 9 '15 at 21:52 4 ...
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How to import a class from default package

... Wow I really don't know java at all. That was a great help. Guess I'll have to move my class into a package... – anhoppe Jan 20 '16 at 20:14 ...
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Creating temporary files in Android

... This is what I typically do: File outputDir = context.getCacheDir(); // context being the Activity pointer File outputFile = File.createTempFile("prefix", "extension", outputDir); As for their deletion, I am not complete sure either. Since I ...
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How can I create an Asynchronous function in Javascript?

... You cannot make a truly custom asynchronous function. You'll eventually have to leverage on a technology provided natively, such as: setInterval setTimeout requestAnimationFrame XMLHttpRequest WebSocket Worker Some HTML5 APIs such as the File API, Web Database API Technologies that support...
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What version of javac built my jar?

...ersion the class has been compiled FOR, not what version compiled it. Java allows you to compile code so that they're compatible with earlier versions of Java. However, this only applies to byte code and format. It will happily compile code that references JDK 6 libraries into a JDK 5 format, for ex...
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string.Join on a List or other type

... strings from a list of ints so that String.Join(String, String[]) can be called. Only thing I'd say is that it's unusual to see this method written as an extension on String as opposed to IEnumerable<String> - I tend to always call it at the end of a long chain of extension method calls. ...