Monadic count

Rеturns the number of items in a list, dictionary or table.

Syntax: count <x>; count[<x>]; #<x>; #[<x>]

o)count 1 2 3
3
o)count til 10
10
o)count "one"
3
o)count `a`b`c!1 2 3
3
o)count flip `a`b`c!1 2 3
1
o)count([]a:`a`b`c;b:1 2 3)
3
o)

Rеturns 1 for everything else:

o)count 0
1
o)count `ten
1
o)count({x+1})
1
o)

To count elements of nested structures, use each:

o)count(1 2;3;45 67 89)
3
o)count each(1 2;3;45 67 89)
2 1 3
o)count `x`y`z!(1 2 3;`a`b`c;1.1 2.2 3.3)
3
o)count each `x`y`z!(1 2 3;`a`b`c;1.1 2.2 3.3)
x| 3
y| 3
z| 3
o)