deque-empty? ( deque -- ? )
Factor handbook » The language » Collections » Deques

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Vocabulary
deques

Inputs and outputs
dequea deque
?a boolean


Generic word contract
Returns true if a deque is empty.

Notes
This operation is O(1).

Examples
USING: deques prettyprint unrolled-lists ; <unrolled-list> deque-empty? .
t


Definition


Methods