Conjugate R←+Y
If Y is complex, R is Y with the imaginary part of all elements negated.
If Y is real or non-numeric, R is the same array unchanged, although ⊢ is faster. See Same.
Examples
+3j4
3J¯4
+1j2 2j3 3j4
1J¯2 2J¯3 3J¯4
3j4++3j4
6
3j4×+3j4
25
+A←⍳5
1 2 3 4 5
+⎕EX'A'
1