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Using StringWriter for XML Serialization

...e.Xml) (Detailed response is below) All of the answers here are over-complicated and unnecessary (regardless of the 121 and 184 up-votes for Christian's and Jon's answers, respectively). They might provide working code, but none of them actually answer the question. The issue is that nobody tr...
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When to use EntityManager.find() vs EntityManager.getReference() with JPA

I have come across a situation (which I think is weird but is possibly quite normal) where I use the EntityManager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table. ...
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Should I use tag for icons instead of ? [closed]

... To save 100 bytes they would have to include 16 icons and not enable compression. – Quentin Jun 21 '12 at 9:41 8 ...
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How do you detect Credit card type based on number?

...abase is not publicly available, however, there are unofficial lists, both commercial and free, including on Wikipedia. Anyway, to detect the type from the number, you can use a regular expression like the ones below: Credit for original expressions Visa: ^4[0-9]{6,}$ Visa card numbers start with ...
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What's the best way to get the last element of an array without deleting it?

...s , count , end , reset) The test inputs (<<input code>>s) to combine with: null = $array = null; empty = $array = []; last_null = $array = ["a","b","c",null]; auto_idx = $array = ["a","b","c","d"]; shuffle = $array = []; $array[1] = "a"; $array[2] = "b"; $array[0] = "c"; 100 = $arra...
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How to find out client ID of component for ajax update/render? Cannot find component with expression

...t;p:layout> . Here is the inner part of the code (starting from p:tab component); the outer part is trivial. 5 Answers...
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What is the difference between a strongly typed language and a statically typed language?

...nguage? A statically typed language has a type system that is checked at compile time by the implementation (a compiler or interpreter). The type check rejects some programs, and programs that pass the check usually come with some guarantees; for example, the compiler guarantees not to use intege...
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javascript: recursive anonymous function?

... with various implementations of Javascript. (note — that's a fairly old comment; some/many/all of the problems described in Kangax's blog post may be fixed in more modern browsers.) When you give a name like that, the name is not visible outside the function (well, it's not supposed to be; that'...
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What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?

...mat) Image formats can be separated into three broad categories: lossy compression, lossless compression, uncompressed, Uncompressed formats take up the most amount of data, but they are exact representations of the image. Bitmap formats such as BMP generally are uncompressed, although there a...
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How do I adjust the anchor point of a CALayer, when Auto Layout is being used?

...ayout does. The way autolayout works is that in layoutSubviews the runtime comes dashing through all the constraints and setting the frames of all the views accordingly. In other words, the constraints are not magic; they are just a to-do list. layoutSubviews is where the to-do list gets done. And ...