On Tue, 06 Dec 2016 16:16:28 -0800, alex.jakime...@gmail.com wrote: > Code: > say 1.pick(-1) > > Result: > MVMArray: Index out of bounds > in block <unit> at -e line 1 > > > There's no “index” in my code, that's a number of elements. We > probably want an error message that is not so low-level-ish.
I've added an interim-fix[^1] to stop it crashing like that (and instead complain that it goes a non-UInt), but there doesn't yet seem to be a consensus[^2] on whether we should throw on negatives or treat them as zero (same applies to .roll). For example, `match` throws on negative :nth(), and so does `[][-1]`, but `42 xx -1` treats the negative as zero. So I'd like to examine more of these methods and routines to come up with some sort of consistency on what we do with out-of-bounds args. [1] https://github.com/rakudo/rakudo/commit/f367e4edc1 [2] https://irclog.perlgeek.de/perl6/2016-12-07#i_13698488
