v1		input view 1
r1		input row 1
v2		input view 2
r2		input row 2

Roweq returns true if the two specified rows are equal.

set v [view {A B} def {1 2 3 4 1 2}]

view $v roweq 0 $v 1

0

view $v roweq 0 $v 2

1