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What is choice_set in this Django app tutorial?

...jango's ORM follows the relationship backwards from Question too, automatically generating a field on each instance called foo_set where Foo is the model with a ForeignKey field to that model. choice_set is a RelatedManager which can create querysets of Choice objects which relate to the Question i...
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Why do we have to normalize the input for an artificial neural network?

...erent scales for different dims (w1,w2). But learning rate is the SAME for all dims --> steps in elongated dim (w2) are very small until reaches the local min. Problem: Cannot inc LR, since it will skip the local min in the other dim (w1). See demo at youtube.com/watch?reload=9&v=UIp2CMI0748 ...
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How to remove multiple indexes from a list at the same time? [duplicate]

...t-in operation to remove a number of indexes at once. Your example is actually a contiguous sequence of indexes, so you can do this: del my_list[2:6] which removes the slice starting at 2 and ending just before 6. It isn't clear from your question whether in general you need to remove an arbitr...
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What is the difference between syntax and semantics in programming languages?

...he language. It answers the question: how do I construct a valid sentence? All languages, even English and other human (aka "natural") languages have grammars, that is, rules that define whether or not the sentence is properly constructed. Here are some C language syntax rules: separate statement...
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How to automatically install Emacs packages by specifying a list of package names?

...a list of package names in .emacs file and then package could automatically search and install the packages, so that I don't need to install them manually by calling M-x package-list-packages . How to do that? ...
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How do I convert an NSString value to NSData?

... edited Aug 5 '12 at 15:59 ldiqual 14k66 gold badges4545 silver badges8484 bronze badges answered May 23 '09 at 11:34 ...
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What are the most useful Intellij IDEA keyboard shortcuts? [closed]

...cuts ( Visual Studio .NET 2003 and 2005 Keyboard Shortcuts ), but didn't really spot anything that helped. Hopefully the answers to this question will fill the void. ...
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jquery: $(window).scrollTop() but no $(window).scrollBottom()

... @crashspringfield Actually that's a different question. This question is about placing things near the bottom of the viewport not the bottom of the page. – iPherian May 6 '17 at 0:45 ...
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Parse RSS with jQuery

... WARNING The Google Feed API is officially deprecated and doesn't work anymore! No need for a whole plugin. This will return your RSS as a JSON object to a callback function: function parseRSS(url, callback) { $.ajax({ url: document.location.protocol +...
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What are the alternatives now that the Google web search API has been deprecated? [closed]

... From the TOS: "You specifically agree not to access (or attempt to access) any of the Services through any automated means (including use of scripts or web crawlers)..." – ændrük Mar 6 '11 at 17:53 ...