Trait grb::attribute::ObjAttrGet

pub trait ObjAttrGet<O, V> {
    fn get(&self, model: &Model, idx: i32) -> Result<V>;
    fn get_batch<I: IntoIterator<Item = Result<i32>>>(
        &self, 
        model: &Model, 
        idx: I
    ) -> Result<Vec<V>>;
}

A queryable ModelObject attribute (eg Var or Constr)

Required methods

fn get(&self, model: &Model, idx: i32) -> Result<V>

Get the value for this attribute

fn get_batch<I: IntoIterator<Item = Result<i32>>>(
    &self,
    model: &Model,
    idx: I
) -> Result<Vec<V>>

Get multiple values for this attribute at once

Implementors

impl ObjAttrGet<Constr, ConstrSense> for ConstrSenseAttr

impl ObjAttrGet<Var, VarType> for VarVTypeAttr

impl<A> ObjAttrGet<<A as ObjAttr>::Obj, f64> for A where
    A: DoubleAttr + ObjAttr + AsCStr, 

impl<A> ObjAttrGet<<A as ObjAttr>::Obj, i8> for A where
    A: CharAttr + ObjAttr + AsCStr, 

impl<A> ObjAttrGet<<A as ObjAttr>::Obj, i32> for A where
    A: IntAttr + ObjAttr + AsCStr, 

impl<A> ObjAttrGet<<A as ObjAttr>::Obj, String> for A where
    A: StrAttr + AsCStr + ObjAttr, 

From the Gurobi manual regarding string attributes:

Note that all interface routines that return string-valued attributes are returning pointers into internal Gurobi data structures. The user should copy the contents of the pointer to a different data structure before the next call to a Gurobi library routine. The user should also be careful to never modify the data pointed to by the returned character pointer.