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Automatic creation date for Django model form objects?

What's the best way to set a creation date for an object automatically, and also a field that will record when the object was last updated? ...
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Superscript in markdown (Github flavored)?

... to write O(n^2) sensibly, I would just type O(n<sup>2</sup>), and it would appear as O(n<sup>2</sup>). Nice. Now why didn't that work on SO markdown? – phonetagger Apr 2 '15 at 17:19 ...
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Render a variable as HTML in EJS

...ot printed out. <%= code %> ... which is code that is evaluated and printed out (escaped). <%- code %> ... which is code that is evaluated and printed out (not escaped). Since you want to print your variable and NOT escape it, your code would be the last type (with the <%-)....
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What is the difference between double-ampersand (&&) and semicolon (;) in Linux Bash?

What is the difference between ampersand and semicolon in Linux Bash ? 3 Answers 3 ...
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How do you get the width and height of a multi-dimensional array?

... postfix: "", imageUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
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Using --no-rdoc and --no-ri with bundler

When using gem install gem_name I can pass --no-rdoc and --no-ri switches to skip generating RDoc/RI documentation for the gem on install. ...
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Is generator.next() visible in Python 3?

...t__(). The reason for this is consistency: special methods like __init__() and __del__() all have double underscores (or "dunder" in the current vernacular), and .next() was one of the few exceptions to that rule. This was fixed in Python 3.0. [*] But instead of calling g.__next__(), use next(g). ...
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Case insensitive Query with Spring CrudRepository

...ER? My db has indexing based on lower case – Sudip Bhandari Aug 30 '18 at 6:47 @SudipBhandari : Sure u can. ...
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What is the Oracle equivalent of SQL Server's IsNull() function?

... coalesce is supported in both Oracle and SQL Server and serves essentially the same function as nvl and isnull. (There are some important differences, coalesce can take an arbitrary number of arguments, and returns the first non-null one. The return type for isn...
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Loop backwards using indices in Python?

...y it's 10 MB, then creating the reverse indices upfront would take seconds and use up over 50 MB of memory. Using a reversed generator would take milliseconds and only use up a few bytes of memory. – Blixt Sep 29 '19 at 6:23 ...