Re: How to walkthrough a tree and calculate value on path?

[sujoy]

Try to traverse through Dictionary

tree:([]parent:`A`A`A`B`B`E`E;child:`B`C`D`E`F`G`H;data:(1;2;3;4;5;6;7)); 
tree:([]parent:`A`A`A`B`B`E`E;child:`B`C`D`E`F`G`H;data:(1;2;3;4;5;6;7)); 
traverse_dict:exec child!parent from tree; 
calc:`A`D`C`B`F`E`G`H!1 3 2 1 5 4 6 7; 
traverse_func:{[st;end;dict;calc] prd calc except[(dict) end;(dict) st] }[;;traverse_dict;calc]; 
outputTree:([] parent:`A`A`A`A`A`B`B`B`E`E;child:`C`D`F`G`H`F`G`H`G`H); // output update 
val:traverse_func'[parent;child] from outputTree