How to handle cspy.res_cost object if it has variable length ?

When considering the following constraints :

• maximum number of stops

• load constraints

• duration constraints

resources extension functions are additive, so it is not necessary to define a custom REF.

But when considering time windows, a custom REF is necessary with the cspy.REF_custom method :

How can we handle the fact that the cumulative_res object has a variable length, as it depends on which constraints are activated (load, duration, etc.) ?

For example, we know that the monotone resource is alway first (new_res[0}+=1), but not sure how to handle the other ones.

[torressa]

Works with the the version in cspy-master!!

[Kuifje02]

Nice I’ll take a look !