Dear all, why it reports error with && in case below: sum((change_cost[k,l,j]*C[k,l,j,t,t+1]) for k in F, l in F, j in U, t in TIME: (t<=length(TIME)-1) && (k != l)) Thanks!

I’m not exactly sure how it tried to parse it but the problem is almost certainly with :, where you probably want if instead.

ERROR: LoadError: syntax: invalid identifier name "&&"

tomerarnon August 16, 2020, 10:50am 2

My guess is it has to do with TIME:, or with some of those parentheses. Something there is invalid syntax.

3 Likes

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