peek-front ( deque -- obj )
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Vocabulary
deques

Inputs
dequea deque


Outputs
objan object


Word description
Returns the object at the front of the deque.

Errors
Throws an error if the deque is empty.

Definition
USING: kernel ;

IN: deques

: peek-front ( deque -- obj )
peek-front* [ drop empty-deque ] unless ; inline