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December 17, 2015 11:39
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Symbol#to_proc
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| values = [1, 2, 3, 4, 5] | |
| values.inject(&:+) #=> 15 | |
| values.inject(10, &:+) #=> 25 | |
| values.map &1.method(:+) #=> [2, 3, 4, 5, 6] | |
| class String | |
| def translate(word) | |
| "#{word} => #{self}" | |
| end | |
| end | |
| greetings = ["hello", "hola"] | |
| greetings.map &"bonjour".method(:translate) | |
| #=> ["hello => bonjour", "hola => bonjour"] |
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