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SQL RANK() versus ROW_NUMBER()
...ly see the difference if you have ties within a partition for a particular ordering value.
RANK and DENSE_RANK are deterministic in this case, all rows with the same value for both the ordering and partitioning columns will end up with an equal result, whereas ROW_NUMBER will arbitrarily (non dete...
JavaScript before leaving the page
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In order to have a popop with Chrome 14+, you need to do the following :
jQuery(window).bind('beforeunload', function(){
return 'my text';
});
The user will be asked if he want to stay or leave.
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How to order by with union in SQL?
Is it possible to order when the data is come from many select and union it together? Such as
8 Answers
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Generate C# class from XML
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Pity it seems to invert the order of classes (outside elements listed last)
– Savage
Jan 16 at 14:34
add a comment
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C++ Const Usage Explanation
... Method3) you read back-and-forth from left-to-right-back-to-left, etc. in order to decode naming conventions. So const int* const Method3(const int* const&) const is a class method that doesn't change any class members (of some un-named class) and takes a constant reference to a pointer that p...
Inline functions vs Preprocessor macros
...ency may occur during macro expansion due to reevaluation of arguments and order of operations. For example
#define MAX(a,b) ((a)>(b) ? (a) : (b))
int i = 5, j = MAX(i++, 0);
would result in
int i = 5, j = ((i++)>(0) ? (i++) : (0));
The macro arguments are not evaluated before macro expan...
What's the difference between an inverted index and a plain old index?
...at everyone needs to agree which one is "left" and which one is "right" in order for the words to have meaning. If, as a culture, we decided to flip left and right, then you'd have the same issue figuring out what a "right turn" vs a "left turn" is since the agreed upon meaning had changed. However,...
When should I use a struct rather than a class in C#?
...meter outside of the Dictionary class. Further investigation shows that in order to satisfy implementation of IEnumerable, Dictionary uses the Enumerator struct which it copies every time an enumerator is requested ...makes sense.
Internal to the Dictionary class. Enumerator is public because Dictio...
What does the “yield” keyword do?
...her list?
Then just import itertools.
An example? Let's see the possible orders of arrival for a four-horse race:
>>> horses = [1, 2, 3, 4]
>>> races = itertools.permutations(horses)
>>> print(races)
<itertools.permutations object at 0xb754f1dc>
>>> print...
How do I discover memory usage of my application in Android?
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They're likely in the same order as the input array.
– taer
Aug 16 '10 at 17:03
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