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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
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Transaction.objects.all().values('actor').annotate(total=Count('actor')).order_by('total')
values() : specifies which columns are going to be used to "group by"
Django docs:
"When a values() clause is used to constrain the columns that are
returned in the result set, the method for evaluating an...
When and why to 'return false' in JavaScript?
...lling event.preventDefault() or setting event.returnValue = false (IE); in order to stop the event from bubbling, you'll have to call event.stopPropagation() or setting event.cancelBubble = true (IE)
– Christoph
May 12 '09 at 23:55
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How to Sort a List by a property in the object
I have a class called Order which has properties such as OrderId , OrderDate , Quantity , and Total . I have a list of this Order class:
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What are the differences between Perl, Python, AWK and sed? [closed]
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In order of appearance, the languages are sed, awk, perl, python.
The sed program is a stream editor and is designed to apply the actions from a script to each line (or, more generally, to specified ranges of lines) of the inpu...
When should I use uuid.uuid1() vs. uuid.uuid4() in python?
...at's not been mentioned is that of locality.
A MAC address or time-based ordering (UUID1) can afford increased database performance, since it's less work to sort numbers closer-together than those distributed randomly (UUID4) (see here).
A second related issue, is that using UUID1 can be useful i...
jQuery $(document).ready and UpdatePanels?
...n the page. You shouldn't need to do anything other than the code above in order to use it as long as the UpdatePanel is on the page.
If you need more detailed control, this event passes arguments similar to how .NET events are passed arguments (sender, eventArgs) so you can see what raised the eve...
When would I use XML instead of SQL? [closed]
... would be more useful than the approach I've always used, which is storing all of my data in a (My)SQL database and then using PHP/Python/etc. to work with it on the web as needed.
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Regular expression to match balanced parentheses
I need a regular expression to select all the text between two outer brackets.
21 Answers
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Admob Error in Eclipse for android:configChanges
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screenSize and smallestScreenSize are only supported in API Level 13, which means Honeycomb, are you sure you need them? As they are quite Honeycomb specific.
– HefferWolf
Oct 26 '11 at 8:08
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Array.push() if does not exist?
...: Computes the union of the passed-in arrays: the list of unique items, in order, that are present in one or more of the arrays.
_.union([1, 2, 3], [101, 2, 1, 10], [2, 1]);
=> [1, 2, 3, 101, 10]
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