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What is an efficient way to implement a singleton pattern in Java? [closed]

...pt that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated serialization or reflection attacks. While this approach has yet to be widely adopted, a single-element enum type is the bes...
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How many database indexes is too many?

...nds on the operations that occur on the table. If there's lots of SELECTs and very few changes, index all you like.... these will (potentially) speed the SELECT statements up. If the table is heavily hit by UPDATEs, INSERTs + DELETEs ... these will be very slow with lots of indexes since they all ...
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How to convert TimeStamp to Date in Java?

... @vs06 What makes you think it is deprecated? The latest java 7 and 8 docs both say otherwise (docs.oracle.com/javase/7/docs/api/java/util/Date.html#getTime() and docs.oracle.com/javase/8/docs/api/java/util/Date.html#getTime--) – Alex Coleman Sep 22 ...
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Displaying build times in Visual Studio?

... Menu Tools → Options → Projects and Solutions → VC++ Project Settings → Build Timing should work. share | improve this answer | ...
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iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate]

..., then definitely consider using Auto Layout. It removes all fixed layout handling and instead uses constraints to lay things out. Nothing will be hard-coded, and your life will become a lot simpler. However, if you have to support older iOS's, then it really depends on your application. A majority...
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What are the differences between “generic” types in C++ and Java?

Java has generics and C++ provides a very strong programming model with template s. So then, what is the difference between C++ and Java generics? ...
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How to add elements of a Java8 stream into an existing List

... to add to an existing collection using forEachOrdered(). This is a useful and effective technique for mutating existing collections. My answer addresses why you shouldn't use a Collector to mutate an existing collection. The short answer is no, at least, not in general, you shouldn't use a Collect...
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What is an “unwrapped value” in Swift?

I'm learning Swift for iOS 8 / OSX 10.10 by following this tutorial , and the term " unwrapped value " is used several times, as in this paragraph (under Objects and Class ): ...
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NTFS performance and large volumes of files and directories

How does Windows with NTFS perform with large volumes of files and directories? 7 Answers ...
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What vim plugins are available for Eclipse? [closed]

I have found three and would like to know if there are others and what their advantages or disadvantages might be: 4 Answer...