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How can I convert an RGB image into grayscale in Python?

... SciPy's image I/O is literally PIL/Pillow. Hence, testing SciPy is effectively retesting PIL/Pillow with negligible overhead introduced by SciPy's wrapper functions. It would have been much more useful to substitute OpenCV (which does not leverage PIL...
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How can one use multi threading in PHP applications

... PHP documentation: pthreads is an object-orientated API that provides all of the tools needed for multi-threading in PHP. PHP applications can create, read, write, execute and synchronize with Threads, Workers and Threaded objects. Warning: The pthreads extension cannot be used in a web ...
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How to join two JavaScript Objects, without using JQUERY [duplicate]

... merge them and crete a single json object. The resultant json should have all the values from obj2 and the values from obj1 which is not present in obj2. ...
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Node.js get file extension

... Try 'filename.css.gz'.split('.').slice(1).join('.') to get all extensions – Trevor Jul 31 '17 at 21:53 11 ...
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Get IP address of visitors using Flask for Python

...emote_addr) When proxies, such as nginx, forward addresses, they typically include the original IP somewhere in the request headers. Update See the flask-security implementation. Again, review the documentation about ProxyFix before implementing. Your solution may vary based on your particular...
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Using Node.JS, how do I read a JSON file into (server) memory?

... For the sake of completeness. Their exists a npm called jsonfile. – Stefan Feb 23 '16 at 15:37 ...
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ValidateAntiForgeryToken purpose, explanation and example

...icking the logged in user into submitting a form, or by simply programmatically triggering a form when the page loads. The feature doesn't prevent any other type of data forgery or tampering based attacks. To use it, decorate the action method or controller with the ValidateAntiForgeryToken attrib...
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Not receiving Google OAuth refresh token

... You need access_type=offline in all cases when you want the refresh_token. – DanH Jan 16 '13 at 3:07 ...
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Mapping over values in a python dictionary

..., f(kv[1])), my_dictionary.iteritems())) but that's not that readable, really. share | improve this answer | follow | ...
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C default arguments

... Not really. The only way would be to write a varargs function and manually fill in default values for arguments which the caller doesn't pass. share ...