Re: Negative string offsets

On Mon, 20 Jun 2011 18:27:48 +0200, Robert Eisele <robert@xarg.org> wrote: > 2011/6/20 Johannes Schlüter <johannes@schlueters.de> >> Yes. So having this in the current form accepted means that >> >> $a[-1]; >> >> can have two meanings: >> >> 1) Get the last item (byte in a string) >> 2) Get item -1 (in an array) >> > > Yes, sure. But if this feature is documented well, I can't see any > problems with this, especially if the trend goes towards a more > typed language where the user knows about the used data-type. I consider having exact same semantics for two quite different operations bad. And I don't buy the "more typed language" argument. What does echo my_cool_function()[-1]; do? >> Which are to different things. >> >> Currently we treat >> >> $a{$o} and $a[$o] >> >> as equal. My suggestion was to split this up to avoid the conflict from >> above. I didn't suggest adding support for $a[-1] as last element for >> arrays, I know quite well why this won't make sense. >> > > I know about the equality of the two bracket forms. But I read somewhere > that > the trend goes towards [] - and maybe it was something from you. There's no clear trend on this. It's a back and forth. Always depends on the features we think about. johannes