Enum grb::Error

pub enum Error {
    FromAPI(String, i32),
    NulError(NulError),
    ModelObjectRemoved,
    ModelObjectPending,
    ModelObjectMismatch,
    ModelUpdateNeeded,
    AlgebraicError(String),
    NotYetSupported(String),
}

The error type for operations in Gurobi Rust API

Variants

FromAPI(String, i32)

An error returned from Gurobi C API. Contains the message and the error code.

NulError(NulError)

Conversion to a C-style null-termined string failed. Contains the underlying std::ffi::NulError.

ModelObjectRemoved

Query/modifying a removed variable or constraint

ModelObjectPending

Model object hasn't been updated yet. A call to Model::update is needed.

ModelObjectMismatch

Model object comes from a different model

ModelUpdateNeeded

A call to Model::update is required before this operation

AlgebraicError(String)

Modelling errors caused by the user, usually by providing quadratic expressions to methods that expect linear terms such as Model::add_constr.

NotYetSupported(String)

Gurobi feature not yet supported by this crate. Currently for internal use only.

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error

pub fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

pub fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

pub fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<NulError> for Error

fn from(err: NulError) -> Error

Performs the conversion.

impl PartialEq<Error> for Error

fn eq(&self, other: &Error) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Error) -> bool

This method tests for !=.

impl StructuralEq for Error

impl StructuralPartialEq for Error