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Why is null an object and what's the difference between null and undefined?

...n't know what you're talking about. You haven't ever mentioned any name before. Are you seeing some other scripting language on the (client-)side? name = null; You: What is name? JavaScript: I don't know. In short; undefined is where no notion of the thing exists; it has no type, and it's never bee...
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count vs length vs size in a collection

... of programming languages and libraries I have noticed various terms used for the total number of elements in a collection. ...
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Going from a framework to no-framework [closed]

I've been developing in PHP for about 8 years as a hobby. In 2009, I picked up codeigniter and since then I've not managed to get a single project developed. ...
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Comparison between Mockito vs JMockit - why is Mockito voted better than JMockit? [closed]

I'm investigating which mocking framework to use for my project and have narrowed it down to JMockit and Mockito . 5 An...
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Return value in a Bash function

I am working with a bash script and I want to execute a function to print a return value: 9 Answers ...
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When is JavaScript's eval() not evil?

I'm writing some JavaScript code to parse user-entered functions (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result. ...
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What is a NullPointerException, and how do I fix it?

...n this example, the variable x is an int and Java will initialize it to 0 for you. When you assign it the value of 10 on the second line, your value of 10 is written into the memory location referred to by x. But, when you try to declare a reference type, something different happens. Take the follow...
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Simple and fast method to compare images for similarity

I need a simple and fast way to compare two images for similarity. I.e. I want to get a high value if they contain exactly the same thing but may have some slightly different background and may be moved / resized by a few pixel. ...
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Why is f(i = -1, i = -1) undefined behavior?

I was reading about order of evaluation violations , and they give an example that puzzles me. 11 Answers ...
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WebView and HTML5

... (video html5 tag) within a WebView, but I must say I had to deal with it for few days. These are the steps I had to follow so far: -Find a properly encoded video -When initializing the WebView, set the JavaScript, Plug-ins the WebViewClient and the WebChromeClient. url = new String("http://brok...