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How to easily truncate an array with JavaScript?
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There is a slice method
array.slice(0, 4);
Will return the first four elements.
Don't forget to assign it back to your variable if you want to discard the other values.
Note: This is just regular javascript, no need for jquery.
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How do I get the last four characters from a string in C#?
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423
mystring.Substring(Math.Max(0, mystring.Length - 4)); //how many lines is this?
If you're po...
Further understanding setRetainInstance(true)
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94
Ok, perhaps I was slightly too harsh on the Android documentation, because it does have some use...
How to execute a Ruby script in Terminal?
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edited Jul 14 '15 at 20:08
Vince
1,41022 gold badges2323 silver badges4444 bronze badges
a...
What's the difference between a Python “property” and “attribute”?
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Ethan FurmanEthan Furman
47.7k1414 gold badges113113 silver badges189189 bronze badges
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How to keep index when using pandas merge
...1 1 1
b 2 3 2
c 3 4 NaN
Note that for some left merge operations, you may end up with more rows than in a when there are multiple matches between a and b. In this case, you may need to drop duplicates.
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pandas GroupBy columns with NaN (missing) values
...ng the groupby (e.g. -1):
In [11]: df.fillna(-1)
Out[11]:
a b
0 1 4
1 2 -1
2 3 6
In [12]: df.fillna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this github i...
biggest integer that can be stored in a double
What is the biggest "no-floating" integer that can be stored in an IEEE 754 double type without losing precision ?
7 Answer...
Escape double quotes in parameter
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mousiomousio
9,02144 gold badges2828 silver badges4040 bronze badges
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python location on mac osx
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[GCC 4.2.1 (Apple Inc. build 5646)] is the version of GCC that the Python(s) were built with, not the version of Python itself. That information should be on the previous line. For example:
# Apple-supplied Python 2.6 in OS X 1...