Macro grb::add_var

add_var!() { /* proc-macro */ }

Convienence wrapper around Model::add_var; adds a new variable to a Model object. The macro keyword arguments are optional.

Syntax

The syntax of macro is two positional arguments followed by any number of named arguments:

add_var!(MODEL, VAR_TYPE, NAMED_ARG1: VAL1, NAMED_ARG2: VAL2, ...)

MODEL should be an instance of a Model.

VAR_TYPE should be the variable type - a variant of VarType.

The named arguments are described below.

Name	Type	Model::add_var argument
name	Anything that implements AsRef<str> (&str, String, etc)	name
obj	Anything that can be cast to a f64	obj
bounds	A range expression, see below	ub & lb

The bounds argument takes a value of the form LB..UB where LB and UB are the upper and lower bounds of the variable. LB and UB can be left off as well, so ..UB (short for -INFINITY..UB), LB.. (short for LB..INFINITY) and .. are also valid values.

use grb::prelude::*;
let mut model = Model::new("Model").unwrap();
add_var!(model, Continuous, name: "name", obj: 0.0, bounds: -10..10)?;
add_var!(model, Integer, bounds: 0..)?;
add_var!(model, Continuous, name: &format!("X[{}]", 42))?;