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How to play audio?

...ile.mp3'); audio.play(); function play() { var audio = new Audio('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3'); audio.play(); } <button onclick="play()">Play Audio</button> This uses the HTMLAudioElement interface, which plays audio th...
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Java abstract interface

...it's optional, just as public on interface methods. See the JLS on this: http://java.sun.com/docs/books/jls/second_edition/html/interfaces.doc.html 9.1.1.1 abstract Interfaces Every interface is implicitly abstract. This modifier is obsolete and should not be used in new programs. And ...
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How to check version of python modules?

...y: array processing for numbers, strings, records, and objects. Home-page: http://www.numpy.org Author: NumPy Developers Author-email: numpy-discussion@python.org License: BSD Location: c:\users\prowinjvm\appdata\local\programs\python\python36\lib\site-packages Requires: For more Details: >&g...
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Combining C++ and C - how does #ifdef __cplusplus work?

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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Max size of an iOS application

...Thanks to comment from marsbear. In addition, the document has moved here: http://developer.apple.com/library/ios/documentation/LanguagesUtilities/Conceptual/iTunesConnect_Guide/iTunesConnect_Guide.pdf As of July 13, 2012 The above information is still the same with the exception of Over The Air do...
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How to list out all the subviews in a uiviewcontroller in iOS?

...t-in way to dump the view hierarchy is useful -- recursiveDescription, per http://developer.apple.com/library/ios/#technotes/tn2239/_index.html It outputs a more complete view hierarchy which you might find useful: > po [_myToolbar recursiveDescription] <UIToolbarButton: 0xd866040; frame = ...
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How to use getJSON, sending data with post method?

... The $.getJSON() method does an HTTP GET and not POST. You need to use $.post() $.post(url, dataToBeSent, function(data, textStatus) { //data contains the JSON object //textStatus contains the status: success, error, etc }, "json"); In that call, da...
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Why can't I use a list as a dict key in python?

... Here's an answer http://wiki.python.org/moin/DictionaryKeys What would go wrong if you tried to use lists as keys, with the hash as, say, their memory location? Looking up different lists with the same contents would produce different r...
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mongodb: insert if not exists

... As of MongoDB 2.4, you can use $setOnInsert (http://docs.mongodb.org/manual/reference/operator/setOnInsert/) Set 'insertion_date' using $setOnInsert and 'last_update_date' using $set in your upsert command. To turn your pseudocode into a working example: now = dateti...
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How to convert an xml string to a dictionary?

... This is a great module that someone created. I've used it several times. http://code.activestate.com/recipes/410469-xml-as-dictionary/ Here is the code from the website just in case the link goes bad. from xml.etree import cElementTree as ElementTree class XmlListConfig(list): def __init__...