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How can I convert a DOM element to a jQuery element?
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455
var elm = document.createElement("div");
var jelm = $(elm);//convert to jQuery Element
var html...
Rails 3 execute custom sql query without a model
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5 Answers
5
Active
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Lowercase and Uppercase with jQuery
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435
I think you want to lowercase the checked value? Try:
var jIsHasKids = $('#chkIsHasKids:checked...
What do (lambda) function closures capture?
...: b + a)(i)
...
>>> adders[1](3)
4
>>> adders[2](3)
5
The scope here is created using a new function (a lambda, for brevity), which binds its argument, and passing the value you want to bind as the argument. In real code, though, you most likely will have an ordinary functio...
C++ template typedef
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565
C++11 added alias declarations, which are generalization of typedef, allowing templates:
temp...
How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
...er pandas:]
You could use the function isnull instead of the method:
In [56]: df = pd.DataFrame([range(3), [0, np.NaN, 0], [0, 0, np.NaN], range(3), range(3)])
In [57]: df
Out[57]:
0 1 2
0 0 1 2
1 0 NaN 0
2 0 0 NaN
3 0 1 2
4 0 1 2
In [58]: pd.isnull(df)
Out[58]:
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How to load a tsv file into a Pandas DataFrame?
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154
Note: As of 17.0 from_csv is discouraged: use pd.read_csv instead
The documentation lists a .f...
How to check whether a file or directory exists?
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5 Answers
5
Active
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How can I filter a Django query with a list of values?
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562
From the Django documentation:
Blog.objects.filter(pk__in=[1, 4, 7])
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Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
... there are at least two differences :
__DIR__ only exists with PHP >= 5.3
which is why dirname(__FILE__) is more widely used
__DIR__ is evaluated at compile-time, while dirname(__FILE__) means a function-call and is evaluated at execution-time
so, __DIR__ is (or, should be) faster.
As,...