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SQLAlchemy: how to filter date field?
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answered Jan 17 '12 at 16:54
vanvan
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Computational complexity of Fibonacci Sequence
...b(n) as sum of time to calculate Fib(n-1) plus the time to calculate Fib(n-2) plus the time to add them together (O(1)). This is assuming that repeated evaluations of the same Fib(n) take the same time - i.e. no memoization is use.
T(n<=1) = O(1)
T(n) = T(n-1) + T(n-2) + O(1)
You solve this r...
Renaming table in rails
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249
You would typically do this sort of thing in a migration:
class RenameFoo < ActiveRecord::...
@Transactional(propagation=Propagation.REQUIRED)
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answered May 24 '12 at 15:01
GuidoGuido
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How to iterate over the keys and values in an object in CoffeeScript?
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352
Use for x,y of L. Relevant documentation.
ages = {}
ages["jim"] = 12
ages["john"] = 7
for k,v ...
Once upon a time, when > was faster than < … Wait, what?
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answered Sep 7 '11 at 20:34
Nicol BolasNicol Bolas
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How can I determine the type of an HTML element in JavaScript?
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298
nodeName is the attribute you are looking for. For example:
var elt = document.getElementById...
How to change a git submodule to point to a subfolder?
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edited Sep 18 '13 at 15:29
Ballsacian1
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answere...
Naming convention for Scala constants?
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127
The officially recommended style (and I do mean officially) is the first style, camel case with...
Why do I have to access template base class members through the this pointer?
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278
Short answer: in order to make x a dependent name, so that lookup is deferred until the templa...