method
peek
v1_9_2_180 -
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- Class:
Enumerator
peek()public
Returns the next object in the enumerator, but don’t move the internal position forward. When the position reached at the end, StopIteration is raised.
a = [1,2,3] e = a.to_enum p e.next #=> 1 p e.peek #=> 2 p e.peek #=> 2 p e.peek #=> 2 p e.next #=> 2 p e.next #=> 3 p e.next #raises StopIteration