| Same | [ ] _ _ _ | Left, Right |
|
The monads [ and ] are each identity functions;
each yields its argument.
|
x [ y (left bracket) yields the left
argument x , and x ] y (right bracket)
yields the right argument y .
|
n=: i. 2 3
a=: 'abcde'
]n
0 1 2
3 4 5
[a
abcde
n[a
0 1 2
3 4 5
n]a
abcde
([\ ; ]\ ; [\. ; ]\.) 'ABCDEF'
+------+------+------+------+
|A |A |ABCDEF|ABCDEF|
|AB |AB |BCDEF |BCDEF |
|ABC |ABC |CDEF |CDEF |
|ABCD |ABCD |DEF |DEF |
|ABCDE |ABCDE |EF |EF |
|ABCDEF|ABCDEF|F |F |
+------+------+------+------+