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Creating a new column based on if-elif-else condition
... passing in the axis=1 option:
In [1]: df['C'] = df.apply(f, axis=1)
In [2]: df
Out[2]:
A B C
a 2 2 0
b 3 1 1
c 1 3 -1
Of course, this is not vectorized so performance may not be as good when scaled to a large number of records. Still, I think it is much more readable. Especially c...
Best way of returning a random boolean value
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245
A declarative snippet using Array#sample:
random_boolean = [true, false].sample
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Replace only text inside a div using jquery
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edited Oct 29 '14 at 20:50
cuSK
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answered Aug 8 '1...
Newline in markdown table?
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edited Jan 13 '15 at 20:41
answered Aug 25 '12 at 5:03
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Which is the first integer that an IEEE 754 float is incapable of representing exactly?
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2 Answers
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How to use JavaScript variables in jQuery selectors?
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245
var name = this.name;
$("input[name=" + name + "]").hide();
OR you can do something like thi...
How to open multiple pull requests on GitHub
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edited Oct 27 '19 at 13:17
ahmednabil88
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std::next_permutation Implementation Explanation
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172
Let's look at some permutations:
1 2 3 4
1 2 4 3
1 3 2 4
1 3 4 2
1 4 2 3
1 4 3 2
2 1 3 4
...
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How to flatten only some dimensions of a numpy array
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129
Take a look at numpy.reshape .
>>> arr = numpy.zeros((50,100,25))
>>> arr.sh...