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How to get the first column of a pandas DataFrame as a Series?
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>>> import pandas as pd
>>> df = pd.DataFrame({'x' : [1, 2, 3, 4], 'y' : [4, 5, 6, 7]})
>>> df
x y
0 1 4
1 2 5
2 3 6
3 4 7
>>> s = df.ix[:,0]
>>> type(s)
<class 'pandas.core.series.Serie...
find without recursion
Is it possible to use the find command in some way that it will not recurse into the sub-directories? For example,
3 Answ...
Is there a ceiling equivalent of // operator in Python?
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There is no operator which divides with ceil. You need to import math and use math.ceil
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Restore file from old commit in git
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Wow, @heneryville and sehe , I actually thought '7 days ago' was meta for you would figure out what commit. ty!
– AnneTheAgile
Apr 1 '14 at 19:49
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Changing route doesn't scroll to top in the new page
.../app/#/phones
you can see the list of phones. If you scroll to the bottom and click on one of the latest, you can see that the scroll isn't at top, instead is kind of in the middle.
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What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?
...ties virtual. Navigation properties are marked as virtual for lazy loading and scalar properties are marked as virtual for change tracking.
– Ladislav Mrnka
Apr 8 '11 at 18:31
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Correct way to use get_or_create?
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@zypro It's like create(), create object and save it all in one step and doesn't need any save()
– Amin Mir
Jun 19 at 6:05
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How to test if list element exists?
...es(foo) # TRUE
"b" %in% names(foo) # TRUE
"c" %in% names(foo) # FALSE
...and foo[["a"]] is safer than foo$a, since the latter uses partial matching and thus might also match a longer name:
x <- list(abc=4)
x$a # 4, since it partially matches abc
x[["a"]] # NULL, no match
[UPDATE] So, back t...
Creating PHP class instance with a string
I have two classes, class ClassOne { } and class ClassTwo {} . I am getting a string which can be either "One" or "Two" .
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Pair/tuple data type in Go
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There is no tuple type in Go, and you are correct, the multiple values returned by functions do not represent a first-class object.
Nick's answer shows how you can do something similar that handles arbitrary types using interface{}. (I might have used an...