Struct Problem

pub struct Problem { /* private fields */ }

A CPLEX problem instance

Implementations

impl Problem

pub fn new<S>(env: Environment, name: S) -> Result<Self>

where S: AsRef<str>,

Create a new CPLEX problem from a CPLEX environmant

pub fn add_variable(&mut self, var: Variable) -> Result<VariableId>

Add a variable to the problem.

The id for the Variable is returned.

pub fn add_variables(&mut self, vars: Vec<Variable>) -> Result<Vec<VariableId>>

Add an array of variables to the problem.

The id for the variables are returned, in the same order they have been given in the input.

pub fn add_constraint(&mut self, constraint: Constraint) -> Result<ConstraintId>

Add a constraint to the problem.

The id for the constraint is returned.

pub fn add_constraints( &mut self, con: Vec<Constraint>, ) -> Result<Vec<ConstraintId>>

Add an array of constraints to the problem.

The id for the constraints are returned, in the same order they have been given in the input.

pub fn set_objective( self, ty: ObjectiveType, obj: Vec<(VariableId, f64)>, ) -> Result<Self>

Set the objective coefficients.

pub fn set_objective_type(self, ty: ObjectiveType) -> Result<Self>

Change the objective type. Default: ObjectiveType::Minimize.

pub fn write<S>(&self, name: S) -> Result<()>

where S: AsRef<str>,

Write the problem to a file named name.

pub fn add_initial_soln( &mut self, vars: &[VariableId], values: &[f64], ) -> Result<()>

Add an initial solution to the problem.

vars is an array of indices (i.e. the result of prob.add_variable) and values are their values.

pub fn solve_as(self, pt: ProblemType) -> Result<Solution>

Solve the Problem, returning a Solution object with the result.

Trait Implementations

impl Drop for Problem

fn drop(&mut self)

Executes the destructor for this type.

impl Send for Problem