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Why Ruby is Delightful
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| my_array = %w[a b c d e f] #=> ["a", "b", "c", "d", "e", "f"] | |
| my_array[0..3].map &:upcase #=> ["A", "B", "C", "D"] | |
| my_array[0...3].map &:upcase #=> ["A", "B", "C"] | |
| my_array.first(3).map &:upcase #=> ["A", "B", "C"] | |
| Time.new(2013, 1, 3).thursday? #=> true | |
| (1..10).to_a.group_by &:odd? #=> {true=>[1, 3, 5, 7, 9], false=>[2, 4, 6, 8, 10]} |
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