Deque.peekfront
From OpenEUO
Calling Pattern
Call
local d = sl.deque() -- later local r = d.peekfront()
Results
r is any type
Description
Calling peekfront returns the value at the front of the queue, without actually removing it. If the queue is empty, peekfront returns nil. Deque.front is a synonym for peekfront.
Upon Error
Errors are reported and handled according to the operant error redirection mode.
