Equivalent of old syntax @constraintref

Specific Domains Optimization (Mathematical)
2

We removed it. You can create your own data structures, you don’t have to rely on the ones JuMP provides.

using JuMP
model = Model()
data = [10,11,10,19,15]
@variable(model,x[i=1:5]>=0)
@variable(model,10<=y[i=1:5]<=20)

# Option 1 (easiest, probably preferred option)
r_1 = @constraint(model, [j=1:5], y[j] <= data[j])
r_2 = @constraint(model, [j=1:5], y[j] <= sum(x[i] for i in j:5))
rconstraints = vcat(r_1, r_2)

# Option 2 (still an abstract type. Can have issues if one constraint is <= and another >=)
rconstraints = Vector{ConstraintRef}(undef, 10)
for j = 1:5
    rconstraints[j] = @constraint(model, y[j] <= data[j])
    rconstraints[j+5] = @constraint(model, y[j] <= sum(x[i] for i in j:5))
end
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