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Lackoftactics/&method.rb

Created April 9, 2018 09:31
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&method
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&method.rb
In Ruby, &method passes you!
Most Rubyists would know what the following does.
[1, 2, 3].map(&:to_s)
It takes the array of numbers, calls to_s on each item, and returns an array of the return values.
But what if you want to do the opposite? Rather than calling a method on the object, what if you want to call a method with the object as a parameter? Simple!
["1", "2", "3"].map(&method(:Integer))
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