View source for Deque.pushfront

== Calling Pattern ==
Call
 local d = sl.deque()
 -- later
 local r = d.pushfront(a)
Args
 a is any type but nil
Results
 r is any type

== Description ==

Calling pushfront adds a value to the front of the queue. Use [[null]] in lieu of [[nil]] for nil values.  Pushfront returns true upon success. [[Deque.push]] is a synonym for pushfront.

== Upon Error ==

Errors are reported and handled according to the operant error redirection mode.

== See Also ==

* [http://www.easyuo.com/openeuo/wiki/index.php/Simplelib simplelib]

* [[deque]]
* [[deque.pushback]]