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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...
SQL JOIN and different types of JOINs
...Note that a JOIN without any other JOIN keywords (like INNER, OUTER, LEFT, etc) is an INNER JOIN. In other words, JOIN is
a Syntactic sugar for INNER JOIN (see: Difference between JOIN and INNER JOIN).
2. OUTER JOIN :
OUTER JOIN retrieves
Either,
the matched rows from one table and all row...
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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What is the preferred syntax for defining enums in JavaScript?
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I'd like to point out that doing ({ monday: {}, etc. means that if you convert that object to JSON via stringify you'll get [{"day": {}}] which isn't gonna work.
– jcollum
Feb 1 '13 at 0:20
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Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
...various useful special cases it allows (caching, ref counting, debug data, etc.). Unfortunately const_cast is significantly more destructive than mutable because it forces the API client to destroy the const protection of the objects (s)he is using. Additionally it causes widespread const destructio...
Express res.sendfile throwing forbidden error
...ch would give them the ability to pretend to be your PC (man-in-the-middle etc)). Having the .. restriction disallows this possibility as only files from the website can be accessed.
– derekdreery
Nov 23 '15 at 14:51
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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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Are there any Java method ordering conventions? [closed]
...ntly, the methods are pretty jumbled up in terms of utility public/private etc. and I want to order them in a sensible way. Is there a standard way of doing this? E.g. normally fields are listed before methods, the constructor(s) are listed before other methods, and getters/setters last; what about ...
Convert Mercurial project to Git [duplicate]
...r available here [Login required]. No more messing around with fast-export etc. (although its a very good tool)
You will get all your commits, branches and tags intact. One more cool thing is that you can change the author's email-id as well. Check out below screenshots:
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How do I use InputFilter to limit characters in an EditText in Android?
... Seems like this may not work with imeOptions="actionNext", etc.
– Pete Doyle
Oct 3 '19 at 19:41
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