The most recent version of this documentation can be found at https://docs.dyalog.com/20.0/.
Monadic Exclamation Mark means
! 3 9 ¯0.11
6 362880 1.07683
Dyadic Exclamation Mark means
2 1 3 ! 3 10 ¯0.11
3 10 ¯0.0429385
The most recent version of this documentation can be found at https://docs.dyalog.com/20.0/.
! 3 9 ¯0.11
6 362880 1.07683
2 1 3 ! 3 10 ¯0.11
3 10 ¯0.0429385