Linklist.prevlink
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Revision as of 14:48, 18 December 2010 by Ximan (Talk | contribs) (Created page with "== Calling Pattern == Call local k = sl.linklist() -- later local r = k.prevlink(a) Arguments a is a number Results r is a number == Example Usage == local k = sl.linkl...")
Calling Pattern
Call
local k = sl.linklist() -- later local r = k.prevlink(a)
Arguments
a is a number
Results
r is a number
Example Usage
local k = sl.linklist() local j = k.inserta(0,'one') local j0 = j j = k.inserta(j,'two') j = k.inserta(j,'three') print(k.value(k.prev(j)))
--> two
Description
Calling prevlink returns the pseudo-index of the link preceding the valid link with pseudo-index a. If the list is empty, if a is the head of the list, or if a is otherwise an invalid pseudo-index, prevlink returns 0.
