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drop_while 

        # Array.drop_while

(from ruby core)
---
    array.drop_while {|element| ... } -> new_array
    array.drop_while -> new_enumerator

---

Returns a new Array containing zero or more trailing elements of `self`;
does not modify `self`.

With a block given, calls the block with each successive element of
`self`; stops if the block returns `false` or `nil`; returns a new Array
*omitting* those elements for which the block returned a truthy value:
    a = [0, 1, 2, 3, 4, 5]
    a.drop_while {|element| element < 3 } # => [3, 4, 5]

With no block given, returns a new Enumerator:
    [0, 1].drop_while # => # => #<Enumerator: [0, 1]:drop_while>

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