Re: Help with prev, next

In article <01022015290505.09282@hermes>, huntsman@hermes.nisu.flinders.edu.au (David Robley) wrote: > According to the docs, "If advancing the internal array pointer results > in going beyond the end of the element list, next() returns false" so > when you try an print out the result, you get nothing. And once the > pointer goes beyond the end (or beginning, with prev) its position is > undefined and you need to use an absolute positioning instruction like > end or reset to relocate the pointer in a known position. > > Analogy - it's a bit like walking up and down stairs - if you are > currently on a step then 'go up one step' or 'go down one step' makes > sense; but if you step off the stairs then you could be anywhere in > relation to the stairs, even out side the building. > > Hmm, that's not a real good analogy - someone else? Pages in a book...? Flipping back a page or forward a page makes sense when you have a bookmark tucked in there somewhere. But once the bookmark falls out, "next page" and "previous page" lose their meaning because the question becomes "Ummm, next/previous relative to *which page, please?" -- CC