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How to combine two or more querysets in a Django view?

...sets into a list is the simplest approach. If the database will be hit for all querysets anyway (e.g. because the result needs to be sorted), this won't add further cost. from itertools import chain result_list = list(chain(page_list, article_list, post_list)) Using itertools.chain is faster than...
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How do I scroll the UIScrollView when the keyboard appears?

... handling of this issue is explained. You should have a look into it. // Call this method somewhere in your view controller setup code. - (void)registerForKeyboardNotifications { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) ...
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How can I get all the request headers in Django?

I need to get all the Django request headers. From what i've read, Django simply dumps everything into the request.META variable along with a lot aof other data. What would be the best way to get all the headers that the client sent to my Django application? ...
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c

... implement a mechanism where, on first visit, Google Analytics is automatically disabled in the absence of an opt-in cookie (cookies that determine cookie preferences are explicitly allowed), and then, if an opt-in happens, re-runs Google Analytics. On subsequent pageviews, all would run smoothly. ...
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CSS table layout: why does table-row not accept a margin?

...ered Jan 2 '10 at 23:42 richardtallentrichardtallent 31.4k1313 gold badges7575 silver badges111111 bronze badges ...
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Using logging in multiple modules

I have a small python project that has the following structure - 11 Answers 11 ...
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In Scala, what exactly does 'val a: A = _' (underscore) mean?

....0d if T is Double, false if T is Boolean, () if T is Unit, null for all other types T. share | improve this answer | follow | ...
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Which characters need to be escaped when using Bash?

...h but also bash. 1. Put the whole string in single quotes This works for all chars except single quote itself. To escape the single quote, close the quoting before it, insert the single quote, and re-open the quoting. 'I'\''m a s@fe $tring which ends in newline ' sed command: sed -e "s/'/'\\\\'...
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What's the difference between deque and list STL containers?

What is the difference between the two? I mean the methods are all the same. So, for a user, they work identically. 8 Answ...
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How can I add a key/value pair to a JavaScript object?

... property. The second form is used when the name of the property is dynamically determined. Like in this example: var getProperty = function (propertyName) { return obj[propertyName]; }; getProperty("key1"); getProperty("key2"); getProperty("key3"); A real JavaScript array can be construct...