Multiple Specification (5 of 9)
It is possible to make multiple simultaneous assignments by enclosing a list of variable names in parentheses on the left of an assignment arrow.
(A B C)← 1 2 3 A 1 B 2 C 3
A scalar to the right of the assignment arrow will be assigned to every item on the left. This is known as scalar extension.
(A B C)←5 A 5 B 5 C 5 (A B C)← 'HI' 'THERE' 'FOLKS' ⍴A (A assigned 'HI' and so on) 2 (A B C)←⊂'HI' 'THERE' 'FOLKS' ⍴A (A, B and C assigned the enclosed vector 3 to the right of the assignment arrow)
Caution: Do not omit the parentheses if you are trying to do multiple specification, as in:
A B C←5
This expression will assign the value 5 to C and then attempt to evaluate the resultant expression. See also the discussion of binding strengths.