Is there a simpler way to close a list by returning to the first element. My
two ways are:
]P=:'ABCDEFGH'
ABCDEFGH
]Q=:(>:$P)$P
ABCDEFGHA
(>:#P)$P
ABCDEFGHA
]Q=:(>:$P)$P
ABCDEFGHA
]POLY=:2{\"1 Q
---T--T--T--T--T--T--T--┐
│AB│BC│CD│DE│EF│FG│GH│HA│
L--+--+--+--+--+--+--+---