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Why is String immutable in Java?

...ant Pool article, every application creates too many string objects and in order to save JVM from first creating lots of string objects and then garbage collecting them. JVM stores all string objects in a separate memory area called String constant pool and reuses objects from that cached pool. When...
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NHibernate ISession Flush: Where and when to use it, and why?

...it() from ISession.Flush() The SQL statements are issued in the following order all entity insertions, in the same order the corresponding objects were saved using ISession.Save() all entity updates all collection deletions all collection element deletions, updates and insertions all collection in...
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What are the benefits of Java's types erasure?

...ersal (∀) and existential (∃) quantification from something like first-order logic. Using type systems for reasoning These goals can be very nicely addressed by type systems. This is especially clear because of the Curry-Howard correspondence. This correspondence is often expressed with the fo...
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Android “Only the original thread that created a view hierarchy can touch its views.”

... Thank you, it's really sad to create a thread in order to go back to the UI Thread but only this solution saved my case. – Pierre Maoui May 4 '15 at 17:16 ...
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MongoDB: Is it possible to make a case-insensitive query?

...ties', { collation: { locale: 'en', strength: 2 } } ); In either case, in order to use the case-insensitive index, you need to specify the same collation in the find operation that was used when creating the index or the collection: db.cities.find( { city: 'new york' } ).collation( { locale: 'e...
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Correct way of using JQuery-Mobile/Phonegap together?

... Please, could you add the order of the script loading, using latest version ?? – realtebo Mar 20 '13 at 18:11 7 ...
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How to get ELMAH to work with ASP.NET MVC [HandleError] attribute?

...CurrentContext().Raise(context.Exception); } } and then register it (order is important) in Global.asax.cs: public static void RegisterGlobalFilters (GlobalFilterCollection filters) { filters.Add(new ElmahHandledErrorLoggerFilter()); filters.Add(new HandleErrorAttribute()); } ...
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SQL parser library for Java [closed]

...QuerySpecification. The structure is more complex than you might expect in order to support UNION, TABLE, VALUES, set operations, etc. You can create a visitor by extending AstVisitor or DefaultTraversalVisitor. Look at SqlFormatter for an example of how to walk the tree. – Dav...
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When to use PNG or JPG in iPhone development?

... decoding the image. You may need to decrease the quality of your JPG's in order to see a real benefit in file size but then you are displaying non-optimal images. File size is certainly a factor but there are other considerations at play as well when choosing an image format. ...
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Regex to validate date format dd/mm/yyyy

... '/', or nothing as separators between year, month, and day, no matter the order. MMddyyyy: ^(((0[13-9]|1[012])[-/]?(0[1-9]|[12][0-9]|30)|(0[13578]|1[02])[-/]?31|02[-/]?(0[1-9]|1[0-9]|2[0-8]))[-/]?[0-9]{4}|02[-/]?29[-/]?([0-9]{2}(([2468][048]|[02468][48])|[13579][26])|([13579][26]|[02468][048]|0[0...