The solver instance with updated constraint bounds.
Arguments
solver
An object of class "highs_solver".
idx
An integer vector specifying the constraint indices. Note that idx starts at 0.
lhs
The new left-hand side bound.
rhs
The new right-hand side bound.
Details
This is a low-level wrapper for `highs.changeRowsBounds` that only does basic
checks to prevent segfaults, but otherwise behaves exactly like
`highs.changeRowsBounds`.