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Rendering JSON in controller

I was reading a book and in a chapter about Controllers when it talks about rendering stuff, for JSON it has an example like this but doesn't go in to details so I couldn't figure out the bigger picture that this example fits in: ...
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How to select date from datetime column?

... The first one is very slow and ignores the indexes. It is better to have LIKE 'date%' – kachar Feb 22 '13 at 10:03 ...
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Get to UIViewController from UIView?

...r directly. The view should instead be independent of the view controller, and be able to work in different contexts. Should you need the view to interface in a way with the view controller, the recommended way, and what Apple does across Cocoa is to use the delegate pattern. An example of how to ...
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What are the Ruby Gotchas a newbie should be warned about? [closed]

I have recently learned the Ruby programming language, and all in all it is a good language. But I was quite surprised to see that it was not as simple as I had expected. More precisely, the "rule of least-surprise" did not seem very respected to me (of course this is quite subjective). For examp...
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What is a typedef enum in Objective-C?

I don't think I fundamentally understand what an enum is, and when to use it. 13 Answers ...
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Utilizing multi core for tar+gzip/bzip compression/decompression

I normally compress using tar zcvf and decompress using tar zxvf (using gzip due to habit). 6 Answers ...
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Accessing class variables from a list comprehension in the class definition

... Class scope and list, set or dictionary comprehensions, as well as generator expressions do not mix. The why; or, the official word on this In Python 3, list comprehensions were given a proper scope (local namespace) of their own, to p...
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How can I combine two commits into one commit? [duplicate]

...a branch 'firstproject' with 2 commits. I want to get rid of these commits and make them appear as a single commit. 3 Answ...
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Dealing with multiple Python versions and PIP?

...This is the recommendation because it works across all versions of Python, and in all forms of virtualenv. For example: # The system default python: $ python -m pip install fish # A virtualenv's python: $ .env/bin/python -m pip install fish # A specific version of python: $ python-3.6 -m pip inst...
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Auto-expanding layout with Qt-Designer

... of your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. The QVBoxLayout should now stretch to fit the window and will resize automatically when the entire window is resized. ...