Deque.popfront
From OpenEUO
Calling Pattern
Call
local d = sl.deque() -- later local r = d.popfront()
Results
r is any type
Description
Calling popfront returns the value at the front of the queue and removes it. If the queue is empty, popfront returns nil. Deque.pop is a synonym for popfront.
Upon Error
Errors are reported and handled according to the operant error redirection mode.
