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Why does javascript map function return undefined?
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187
You aren't returning anything in the case that the item is not a string. In that case, the func...
What's the difference between RANK() and DENSE_RANK() functions in oracle?
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248
RANK gives you the ranking within your ordered partition. Ties are assigned the same rank, with ...
Finding median of list in Python
...> median([1, 3, 5, 7])
4.0
Usage:
import statistics
items = [6, 1, 8, 2, 3]
statistics.median(items)
#>>> 3
It's pretty careful with types, too:
statistics.median(map(float, items))
#>>> 3.0
from decimal import Decimal
statistics.median(map(Decimal, items))
#>>&g...
Add column with constant value to pandas dataframe [duplicate]
...with partially aligned indices:
In [7]: from pandas import DataFrame
In [8]: from numpy.random import randint
In [9]: df = DataFrame({'a': randint(3, size=10)})
In [10]:
In [10]: df
Out[10]:
a
0 0
1 2
2 0
3 1
4 0
5 0
6 0
7 0
8 0
9 0
In [11]: s = df.a[:5]
In [12]: dfa, sa = df.ali...
Is it possible to cast a Stream in Java 8?
Is it possible to cast a stream in Java 8? Say I have a list of objects, I can do something like this to filter out all the additional objects:
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Does uninstalling a package with “pip” also remove the dependent packages?
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85
No, it doesn't uninstall the dependencies packages. It only removes the specified package:
$ pi...
Trying to understand CMTime and CMTimeMake
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Peter DeWeesePeter DeWeese
17.4k88 gold badges7373 silver badges9898 bronze badges
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Get value from hidden field using jQuery
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answered Jun 22 '10 at 8:18
SarfrazSarfraz
345k6868 gold badges500500 silver badges556556 bronze badges
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“for line in…” results in UnicodeDecodeError: 'utf-8' codec can't decode byte
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428
As suggested by Mark Ransom, I found the right encoding for that problem. The encoding was "ISO-...
The 'json' native gem requires installed build tools
I have ruby 1.9.2p180 (2011-02-18) [i386-mingw32] installed on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error.
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