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How can I get the intersection, union, and subset of arrays in Ruby?
... def |(other)
@set | other.set
end
end
x = MultiSet.new([1,1,2,2,3,4,5,6])
y = MultiSet.new([1,3,5,6])
p x - y # [2,2,4]
p x & y # [1,3,5,6]
p x | y # [1,2,3,4,5,6]
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Increment a database field by 1
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edited May 23 '17 at 12:34
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answered May 4 '10 at 4:41
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How to get a specific output iterating a hash in Ruby?
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answered Aug 4 '09 at 13:38
community wiki
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How to get the first column of a pandas DataFrame as a Series?
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143
>>> import pandas as pd
>>> df = pd.DataFrame({'x' : [1, 2, 3, 4], 'y' : [4, ...
Remove first 4 characters of a string with PHP
How can I remove the first 4 characters of a string using PHP?
7 Answers
7
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`levels
...tion, @Marek posted the following solution:
https://stackoverflow.com/a/10432263/636656
4 Answers
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Difference between Google APIs (x86 System Image) and Google APIs (ARM System Image) in Android 4.4.
...6 processor was doing to also emulate the ARM instruction set.
At Android 4.0.3 (API 15) Intel provided their own x86 based Android system image. This could then be used to create AVDs that did not need to do ARM translation. Combined with the Intel Hardware Accelerated Execution Manager (HAXM) the...
Targeting .NET Framework 4.5 via Visual Studio 2010
Today I installed the .NET Framework 4.5 on my machine expecting to be able to use it from Visual Studio 2010, since it's just a minor update that should't pose problems for Visual Studio 2010. Unfortunately I am not, even manually removing certain 4.0 and adding the corresponding 4.5 assemblies r...
CUDA incompatible with my gcc version
...shipped with CUDA SDK.
I have installed the developers driver (version 270.41.19) and the CUDA toolkit,
then finally the SDK (both the 4.0.17 version).
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Rails 4: before_filter vs. before_action
In rails >4.0.0 generators creates CRUD operations with before_action not before_filter . It seems to do the same thing. So what's the difference between these two?
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