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How to use FormData for AJAX file upload?

This is my HTML which I'm generating dynamically using drag and drop functionality. 9 Answers ...
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In Functional Programming, what is a functor?

...e reading various articles on functional programming, but the authors typically assume the reader already understands the term. Looking around on the web has provided either excessively technical descriptions (see the Wikipedia article ) or incredibly vague descriptions (see the section on Functors...
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Why not to deploy on a Friday? [closed]

... monitoring that there aren't performance issues. A new release will generally mean a brief spike of support activity - so scheduling that to happen when there are fewer people available (or when there's more resentment of time taken up) is a bad idea. ...
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Checkboxes in web pages – how to make them bigger?

The standard checkboxes rendered in most browsers are quite small and don’t increase in size even when a larger font is used. What is the best, browser-independent way to display larger checkboxes? ...
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How to quickly open a file in Visual Studio 2012

...arch of the file name. In the whole procedure I don't need to use mouse at all. 6 Answers ...
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Python json.loads shows ValueError: Extra data

...) # == json.loads(json.dumps({}) + json.dumps({})) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Python27\lib\json\__init__.py", line 338, in loads return _default_decoder.decode(s) File "C:\Python27\lib\json\decoder.py", line 368, in decode ...
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Vagrant's port forwarding not working [closed]

I'm running into a small problem at the end of the Getting Started guide for vagrant . I'm working on a CentOS basebox that has Apache2 running (provisioning via Puppet). I've set up port forwarding for web requests using the following line in Vagrantfile : ...
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See what has been installed via MacPorts

Is there a way to see all I have installed via MacPorts? 1 Answer 1 ...
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C++, copy set to vector

...hold the input range. std::back_inserter creates an output iterator that calls push_back on a container for each element, so each element is inserted into the container. Alternatively, you could have created a sufficient number of elements in the std::vector to hold the range being copied: std::v...
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How can I check for an empty/undefined/null string in JavaScript?

...n do if (strValue) { //do something } If you need to check specifically for an empty string over null, I would think checking against "" is your best bet, using the === operator (so that you know that it is, in fact, a string you're comparing against). if (strValue === "") { //... } ...