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What is JSON and why would I use it?

I've looked on wikipedia and Googled it and read the official documentation, but I still haven't got to the point where I really understand what JSON is, and why I'd use it. ...
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Is it possible to force Excel recognize UTF-8 CSV files automatically?

...ing some data into CSV files. The application always uses UTF-8 because of its multilingual nature at all levels. But opening such CSV files (containing e.g. diacritics, cyrillic letters, Greek letters) in Excel does not achieve the expected results showing something like Г„/Г¤, Г–/Г¶ . A...
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How do you check if a JavaScript Object is a DOM Object?

..."object") && (typeof obj.ownerDocument ==="object"); } } It's part of the DOM, Level2. Update 2: This is how I implemented it in my own library: (the previous code didn't work in Chrome, because Node and HTMLElement are functions instead of the expected object. This code is tested...
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How to safely call an async method in C# without await

... exception "asynchronously", you could do: MyAsyncMethod(). ContinueWith(t => Console.WriteLine(t.Exception), TaskContinuationOptions.OnlyOnFaulted); This will allow you to deal with an exception on a thread other than the "main" thread. This means you don't have to "wait" for the...
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Unit test naming best practices [closed]

What are the best practices for naming unit test classes and test methods? 12 Answers ...
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Should all Python classes extend object?

... In Python 2, not inheriting from object will create an old-style class, which, amongst other effects, causes type to give different results: >>> class Foo: pass ... >>> type(Foo()) <type 'instance'> vs. >>> cl...
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How to measure time in milliseconds using ANSI C?

Using only ANSI C, is there any way to measure time with milliseconds precision or more? I was browsing time.h but I only found second precision functions. ...
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How do you performance test JavaScript code?

... Profilers are definitely a good way to get numbers, but in my experience, perceived performance is all that matters to the user/client. For example, we had a project with an Ext accordion that expanded to show some data and then a few nested Ex...
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raw vs. html_safe vs. h to unescape html

... Considering Rails 3: html_safe actually "sets the string" as HTML Safe (it's a little more complicated than that, but it's basically it). This way, you can return HTML Safe strings from helpers or models at will. h can only be used from within a controller or view, since it's from a helper. It w...
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What is “entropy and information gain”?

I am reading this book ( NLTK ) and it is confusing. Entropy is defined as : 7 Answers ...