Here is my desired behavior: A 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
A next_prime 3 NB. find the next index in A where the index greater than
NB. or equal to 3
3
But I am failing in attempt to write an explicit dyadic verb:
next_prime =: 4 : 0
n =. 0
for_i. x do.
if ( (i = 1) * ( i_index >: y ) ) do. n =. i_index
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