Struct grb::Env

pub struct Env { /* private fields */ }

A Gurobi Environment object.

Models objects created with Model::new will use the default Env. This default Env is thread-local and lazily initialized. Currently, it lasts until the current thread; there is no way to de-allocate it from the current thread.

Implementations

impl Env

pub fn empty() -> Result<EmptyEnv>

Create a new empty and un-started environment.

pub fn new(logfilename: &str) -> Result<Env>

Create an environment with log file

Setting logfilename to an empty string will not create a logfile.

pub fn get<P: ParamGet<V>, V>(&self, param: P) -> Result<V>

Query the value of a parameter

pub fn set<P: ParamSet<V>, V>(&mut self, param: P, value: V) -> Result<()>

Set the value of a parameter

pub fn read_params(&mut self, filename: &str) -> Result<()>

Import a set of parameter values from a file

pub fn write_params(&self, filename: &str) -> Result<()>

Write the set of parameter values to a file

pub fn message(&self, message: &str)

Insert a message into log file.

When message cannot convert to raw C string, a panic is occurred.