Re: Swap key-value in dictionary

[cillianreilly]

This achieves what you’re looking for.

q)d:1 2 3!(4 5 3;6 7 3;4 1) 
q)r:1 3 4 5 6 7!(enlist 3;1 2;1 3;enlist 1;enlist 2;enlist 2) 
q){a!key[x]where each flip value(a:asc distinct raze x)in/:x} d 
1| ,3 
3| 1 2 
4| 1 3 
5| ,1 
6| ,2 
7| ,2 

q)r~{a!key[x]where each flip value(a:asc distinct raze x)in/:x}d 
1b