Hi, Op 9 nov. 2012 om 20:19 heeft Stephan Hennig <[email protected]> het volgende geschreven:
> Am 09.11.2012 09:58, schrieb Taco Hoekwater: > What is the advantage of this to the naive > > local n = head > while n do > ... > n = n.next > end > > ? Not a lot, but some people prefer the writing style with for loops. Running speed is comparable for both styles of looping, if I recall correctly. > > a guard missing in the while loop that stops when t == nil. > It is in the code, of course. The explanation was getting long, so I skipped that. > | return t > | end > | \stoptyping > > Again, what is the advantage of this to the naive > > local n = head > while n do > if n.id == <id> then > ... > end > n = n.next > end traverse_id really is faster, because the internal lookups are much faster than the repeated node.id and node.next calls. But still, it is mostly about style. Best wishes, Taco
