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Discussion: Should MOI.set perform complex operations? #358

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@joaquimg

As far as I understand MOI.set is primarily used for setting attributes.

However, #356 introduced:
function MOI.set(model::Model, ::DiffOpt.ForwardDifferentiate)
as a replacement to
function forward_differentiate!(model)

Historically, performing more complex operations has been left (mostly?) for special functions such as:

  • compute_conflict!
  • write_to_file
  • read_from_file
  • submit
  • transform

A partial counter argument is:

  • Utilities.PenaltyRelaxation, but it is a modify not even a set
    I do think modify here makes sense.

Are there any other arguments to each side? any other precedent?

I would like to have the reasoning for that clarified.

What are de advantages and disadvantages?

Bonus:
As a follow-up, we should have good practices and standards documented to help developers consistently make decisions in these cases.

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