You can then use locate()'s version of finding a specific object type within a container (needless to say, look it up); it just returns the first one it finds in it (there could be additional ones). It's equivalent to a for() loop like this:
for(var/object_type/V in Container) Do_Stuff break//only process the first found object
// == var/defined_type/V = locate(object_type) in Container
The efficiency increase is there, although not groundbreaking and this topic is pretty weird in itself; if you have some apparent slowdowns in your code, the problem is not there (ie, the for() line), but in the loop body (or elsewhere). You may also want to consider that it's feasibly possible for multiple mobs to occupy the same turf (though you may still prefer to simply process through one anyway).
