(<0 2 ; 2 3) { m 2 3 10 11What if the left argument wasn't a singleton?

(0 2 ; 2 3) { m 2 11What is going on here? Nothing special, as this is just your old friend rank. The dyad { has a left rank of 0 and a right rank of _ . This means that the left argument is taken as 0-cells and the right argument is taken in its entirety. Visually:

(<0 2) (first left cell) { m gives 2 (<2 3) (next left cell) { m gives 11The result is assembled from the 2 and 11 partial results.

This is called scattered indexing.

(0 0 ; 1 1 ; 2 2) { m NB. scatter index a diagonal 0 5 10

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