Joseph Garvin <[EMAIL PROTECTED]> writes:
> And this way I can keep referring to j instead of myarray[i], but I'm
> still forced to use myarray[i-1] and myarray[i+1] to refer to the
> previous and next elements. Being able to do j.prev, j.next seems more
> intuitive.
>
> Is there some other builtin somewhere that provides better
> functionality that I'm missing?
You could use a generator comprehension (untested):
for prev,cur,next in ((myarray[i-1], myarray[i], myarray[i+1])
for i in xrange(1,len(myarray)-1)):
do_something_with (prev, cur, next)
Alternatively (untested):
elts = iter(myarray)
prev,cur,next = elts.next(),elts.next(),elts.next()
for next2 in elts:
do_something_with (prev, cur, next)
prev,cur,next = cur, next, next2
Of course these fail when there's less than 3 elements.
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