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How to pull a random record using Django's ORM?
... self.aggregate(count=Count('id'))['count']
random_index = randint(0, count - 1)
return self.all()[random_index]
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Select second last element with css
...th-last-child Browser Support:
Chrome 2
Firefox 3.5
Opera 9.5, 10
Safari 3.1, 4
Internet Explorer 9
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Updating version numbers of modules in a multi-module Maven project
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jQuery - Create hidden form element on the fly
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620
$('<input>').attr('type','hidden').appendTo('form');
To answer your second question:
$(...
spring scoped proxy bean
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edited Oct 8 '13 at 9:40
Adrien Be
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Is a Python dictionary an example of a hash table?
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answered Sep 22 '08 at 13:23
nosklonosklo
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How to know the size of the string in bytes?
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answered Jan 3 '12 at 4:09
diyadiya
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Types in Objective-C on iOS
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350
This is a good overview:
http://reference.jumpingmonkey.org/programming_languages/objective-c/t...
Which concurrent Queue implementation should I use in Java?
... ArrayBlockingQueue is a queue of a fixed size. So if you set the size at 10, and attempt to insert an 11th element, the insert statement will block until another thread removes an element. The fairness issue is what happens if multiple threads try to insert and remove at the same time (in other wor...
Boolean operators && and ||
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350
The shorter ones are vectorized, meaning they can return a vector, like this:
((-2:2) >= 0) ...