Double junction arguments swapping sides

Question

I'm confused about how double junctions are supposed to work.

This makes some sense:

say all('a', 'b', 'c') ~ any('d', 'e');

gives

all(any(ad, ae), any(bd, be), any(cd, ce))

This doesn't make sense:

say any('a', 'b', 'c') ~ all('d', 'e');

gives

all(any(da, db, dc), any(ea, eb, ec))

It confuses me because the letter 'a' which I would expect to be on the left of the letter 'd' is now on the right.

This smells like a bug. Will look into it more deeply tomorrow. — Elizabeth Mattijsen, Jul 09 '18 at 22:37
It's correct that an `all` `Junction` auto-threads first, so the result structure being different is correct. However, the dis-ordering looks like a bug indeed. — Jonathan Worthington, Jul 09 '18 at 23:15

score 13 · Accepted Answer · answered Jul 10 '18 at 09:53

13

Thank you for your question / bug report! The next Rakudo compiler release / next Rakudo Star release will contain this fix.

answered Jul 10 '18 at 09:53

1 Answers1