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.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?

...rray(new MyClass[0]); I have run a micro benchmark using jmh the results and code are below, showing that the version with an empty array consistently outperforms the version with a presized array. Note that if you can reuse an existing array of the correct size, the result may be different. Benc...
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difference between iframe, embed and object elements

...ame> The iframe element represents a nested browsing context. HTML 5 standard - "The <iframe> element" Primarily used to include resources from other domains or subdomains but can be used to include content from the same domain as well. The <iframe>'s strength is that the embedded c...
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Error: Tablespace for table xxx exists. Please DISCARD the tablespace before IMPORT

I am fairly new to MySQL and I am getting a pretty interesting error on which I cannot find any help via google and the stackoverflow search. ...
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What's the correct way to communicate between controllers in AngularJS?

....js version 1.2.7. $broadcast now avoids bubbling over unregistered scopes and runs just as fast as $emit. So, now you can: use $broadcast from the $rootScope listen using $on from the local $scope that needs to know about the event Original Answer Below I highly advise not to use $rootScop...
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How does the String class override the + operator?

...x = "+x; The compiler converts "x = "+x; into a StringBuilder internally and uses .append(int) to "add" the integer to the string. 5.1.11. String Conversion Any type may be converted to type String by string conversion. A value x of primitive type T is first converted to a reference val...
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Do zombies exist … in .NET?

... He's a really bright guy with an extensive background in both lower-level and higher-level programming, but his experience with lower level programming far exceeds mine. Anyway, He argued that .NET locking should be avoided on critical systems expected to be under heavy-load if at all possible in ...
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String representation of an Enum

...This is because static field initialisers are called in declaration order, and before the static constructor, creating the weird and necessary but confusing situation that the instance constructor can be called before all static fields have been initialised, and before the static constructor is call...
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Why does pylint object to single character variable names?

I'm still getting used to python conventions and using pylint to make my code more pythonic, but I'm puzzled by the fact that pylint doesn't like single character variable names. I have a few loops like this: ...
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Bootstrap control with multiple “data-toggle”

... "data-toggle". For example, lets say I want a button that has a "tooltip" and a "button" toggle assigned to it. Tried data-toggle="tooltip button", but only the tooltip worked. ...
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Spring schemaLocation fails when there is no internet connection

I am using Spring and in application-context.xml I have the following definitions: 18 Answers ...