Is there a way of changing the key of a hash

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  How to I change the name of a column in rails

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  ! in ruby

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  Array ruby taking 3 last value

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• 0 vote177 views1 answer

  Or even multiple scope parameters. For example, making sure that a teacher can only be on the schedule once per semester for a particular class.

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  Object service

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  Ruby for programmers

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  Rails include dynamic

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  Ruby extract number from string

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  Return tuple or null

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  Ruby is method defined

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