Struct coin_cbc::Model

pub struct Model { /* fields omitted */ }

A MILP model.

Implementations

impl Model

pub fn num_rows(&self) -> u32

Gets the current number of rows of the model.

pub fn num_cols(&self) -> u32

Gets the current number of columns of the model.

pub fn remove_initial_solution(&mut self)

Removes the initial solution.

pub fn set_col_initial_solution(&mut self, col: Col, value: f64)

Sets the column value to the initial solution.

If the solution is not present, it will be initialized with 0 for all coefficients.

pub fn set_initial_solution(&mut self, solution: &Solution)

Sets the initial solution from a Solution.

pub fn set_parameter(&mut self, key: &str, value: &str)

Sets a parameter.

For documentation, launch the cbc binary and type ?.

pub fn set_parameters(
    &mut self,
    iter: impl IntoIterator<Item = (impl AsRef<str>, impl AsRef<str>)>
)

Sets parameters for an iterator.

pub fn rows(&self) -> impl Iterator<Item = Row>

Gets an iterator on the row identifiers.

pub fn cols(&self) -> impl Iterator<Item = Col>

Gets an iterator on the column identifiers.

pub fn add_col(&mut self) -> Col

Adds a column to the model. Returns the corresponding column identifier.

At creation, the bounds of the column are setted to [0, +∞].

pub fn add_integer(&mut self) -> Col

Adds an integer variable to the model.

Equivalent to adding a column and setting it to integer.

pub fn add_binary(&mut self) -> Col

Adds a binary variable to the model.

Equivalent to adding a column and setting it to binary.

pub fn add_row(&mut self) -> Row

Adds a row to the model. Returns the corresponding row identifier.

At creation, the bounds of the row are setted to [-∞, +∞].

pub fn set_weight(&mut self, row: Row, col: Col, weight: f64)

Sets the weight corresponding to the given row and column in the constraint matrix.

pub fn set_integer(&mut self, col: Col)

Changes the given column to integer variable.

pub fn set_continuous(&mut self, col: Col)

Changes the given column to continuous variable.

pub fn set_binary(&mut self, col: Col)

Changes the given column to binary variable.

Equivalent to setting the column as integer and restricting it to [0, 1].

pub fn set_col_upper(&mut self, col: Col, value: f64)

Sets the upper bound of the given column.

pub fn set_col_lower(&mut self, col: Col, value: f64)

Sets the lower bound of the given column.

pub fn set_obj_coeff(&mut self, col: Col, value: f64)

Sets the objective coefficient of the given variable.

pub fn set_row_upper(&mut self, row: Row, value: f64)

Sets the upper bound of the given row.

pub fn set_row_lower(&mut self, row: Row, value: f64)

Sets the lower bound of the given row.

pub fn set_row_equal(&mut self, row: Row, value: f64)

Force the given row to be equal to the given value.

Equivalent to setting the upper bound and the lower bound.

pub fn set_obj_sense(&mut self, sense: Sense)

Sets the objective sense.

pub fn to_raw(&self) -> Model

Construct a raw::Model corresponding to the current state.

pub fn solve(&self) -> Solution

Solves the model. Returns the solution.

Trait Implementations

impl Clone for Model

fn clone(&self) -> Model

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for Model

fn default() -> Model

Returns the "default value" for a type.