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What is SuppressWarnings (“unchecked”) in Java?

...to, and you need to effectively tell the compiler that what you're doing really will be legal at execution time. I usually find this a pain when I'm mocking a generic interface, but there are other examples too. It's usually worth trying to work out a way of avoiding the warning rather than suppres...
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Ruby Metaprogramming: dynamic instance variable names

... This is actually a really great way to do it since this is pretty much what Struct is made for. – Chuck Jul 19 '11 at 5:37 ...
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How SignalR works internally?

Can anyone let me know how SignalR works internally in a high level way? 2 Answers 2 ...
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How do I call the default deserializer from a custom deserializer in Jackson

... but they have code on common so i want to generify it. I try to directly call The serializer but The result isn't unwrapped in the JSON result (each call of serializer create a new object) – herau Oct 17 '14 at 16:19 ...
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Circle drawing with SVG's arc path

... albeit drawn in two pieces. None of this would matter if they would just allow textpaths to accept shapes. But I think they are avoiding that solution since shape elements like circle don't technically have a "start" point. jsfiddle demo: http://jsfiddle.net/crazytonyi/mNt2g/ Update: If you are us...
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How can I select random files from a directory in bash?

...are 100% safe regarding files with spaces and funny symbols in their name. All of them will populate an array randf with a list of random files. This array is easily printed with printf '%s\n' "${randf[@]}" if needed. This one will possibly output the same file several times, and N needs to be kno...
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Python: Append item to list N times

...a good idea for constant values, like ints or strings, is because only a shallow copy is does when using the <list>*<number> syntax, and thus if you did something like [{}]*100, you'd end up with 100 references to the same dictionary - so changing one of them would change them all. Since...
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How do I center floated elements?

...ine-block works cross-browser, even on IE6 as long as the element is originally an inline element. Quote from quirksmode: An inline block is placed inline (ie. on the same line as adjacent content), but it behaves as a block. this often can effectively replace floats: The real use of th...
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How do I remove repeated elements from ArrayList?

...es in a Collection, you should consider why you're using a Collection that allows duplicates. The easiest way to remove repeated elements is to add the contents to a Set (which will not allow duplicates) and then add the Set back to the ArrayList: Set<String> set = new HashSet<>(yourLis...
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What is the difference between Class.this and this in Java

... a nonstatic InnerClass will always have a reference of its OuterClass and all the fields and methods of OuterClass is available to the InnerClass. public static void main(String[] args) { OuterClass outer_instance = new OuterClass(); OuterClass.InnerClass inner_instance1 = outer_i...