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CRON job to run on the last day of the month

...-1 month'); $previousMonth = $date->format('Y-m'); // $previousMonth is now 2013-02. Build query to fetch products for the previous month. – Lamy Jan 19 '13 at 6:41 ...
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Should we pass a shared_ptr by reference or by value?

...er and prettier. Seriously. Value* is short and readable, but it's bad, so now my code is full of const shared_ptr<Value>& and it's significantly less readable and just... less tidy. What used to be void Function(Value* v1, Value* v2, Value* v3) is now void Function(const shared_ptr<Val...
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How can I tell if one commit is a descendant of another commit?

...vuan 7.10 jessie) and 1.9.1 (Ubuntu 14.04 trusty) which are rather ancient now. It works even for Debian wheezy, if you do sudo apt-get install git/wheezy-backports. – Tino Feb 18 '18 at 12:12 ...
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PostgreSQL Autoincrement

... @Dr Deo : they use serial instead autoincrement keyword, i don't know why :) – Ahmad Jul 22 '12 at 7:16 4 ...
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git discard all changes and pull from upstream

... git reset <hash> # you need to know the last good hash, so you can remove all your local commits git fetch upstream git checkout master git merge upstream/master git push origin master -f voila, now your fork is back to same as upstream. ...
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Characters allowed in a URL

Does anyone know the full list of characters that can be used within a GET without being encoded? At the moment I am using A-Z a-z and 0-9... but I am looking to find out the full list. ...
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CSS \9 in width property

...ls wide. More info EDIT: This answer was written in 2011. It should now be noted that this hack also works in IE 10. share | improve this answer | follow ...
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Is !important bad for performance?

... From: http://taligarsiel.com/Projects/howbrowserswork1.htm#CSS_parsing Now, you can easily see, in such as case with the Object Model described above, the parser can mark the rules affected by the !important easily, without much of a subsequent cost. Performance degradation is not a good argumen...
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How can I iterate over an enum?

... Except now you've actually allocated memory when an enum, provided it is zero-indexed and strictly continous, can do that task without allocating memory. – Cloud Jan 17 '14 at 23:02 ...
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Pass complex parameters to [Theory]

... Any ideas what happened with ClassData? I canõt find it in xUnit2.0, for now, I am using MemberData with static method, which creates new instance of class, and returns that. – Erti-Chris Eelmaa May 16 '15 at 23:43 ...