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How to compare versions in Ruby?
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Gem::Version.new('0.4.1') > Gem::Version.new('0.10.1')
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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...ions have worked for me, except the one posted by @4lberto . I'm on pandas 0.23.4 and python 3.6
– goelakash
Aug 25 '18 at 13:22
1
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Pandas: drop a level from a multi-level column index?
...pd.DataFrame([[1,2], [3,4]], columns=cols)
>>> df
a
b c
0 1 2
1 3 4
[2 rows x 2 columns]
>>> df.columns = df.columns.droplevel()
>>> df
b c
0 1 2
1 3 4
[2 rows x 2 columns]
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Fastest hash for non-cryptographic uses?
...because of the reduced length (32 bits compared to 128 bits respectively 160 bits). But if you just want to check whether a stored string is corrupted, you'll be fine with CRC32.
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Mapping two integers to one, in a unique and deterministic way
...sy to define a bijection f : Z -> N, like so:
f(n) = n * 2 if n >= 0
f(n) = -n * 2 - 1 if n < 0
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New Array from Index Range Swift
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This works for me:
var test = [1, 2, 3]
var n = 2
var test2 = test[0..<n]
Your issue could be with how you're declaring your array to begin with.
EDIT:
To fix your function, you have to cast your Slice to an array:
func aFunction(numbers: Array<Int>, position: Int) -> Array&...
Python Infinity - Any caveats?
...-a-number (NaN) values from simple arithmetic involving inf:
>>> 0 * float("inf")
nan
Note that you will normally not get an inf value through usual arithmetic calculations:
>>> 2.0**2
4.0
>>> _**2
16.0
>>> _**2
256.0
>>> _**2
65536.0
>>> _**...
Is there a float input type in HTML5?
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+50
The number type has a step value controlling which numbers are valid (along with max and min), which defaults to 1. This value is also...
Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
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350
You need to specify data, index and columns to DataFrame constructor, as in:
>>> pd.Da...
Can a class member function template be virtual?
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answered Mar 1 '10 at 8:52
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