Enum ModelError 

#[non_exhaustive]
pub enum ModelError {
    NoObjective,
    InvalidInput(String),
    SolveError(SolveError),
    Timeout,
    NonConvex(String),
    NotSupported(String),
    Internal(String),
}

Errors that can occur when building or solving a Model.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NoObjective

solve() was called before minimize() or maximize().

InvalidInput(String)

A modeling API input was invalid.

SolveError(SolveError)

The solver returned a non-optimal status.

Timeout

Solver timed out before finding an optimal solution.

NonConvex(String)

Problem has a non-convex (indefinite) objective; global optimality cannot be guaranteed via IPM. Use solve_qp_global for non-convex continuous QP.

NotSupported(String)

Problem type is not supported by this solver (e.g. QCQP).

Internal(String)

An unexpected internal error (bug or invariant violation).

Trait Implementations

impl Debug for ModelError

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

Formats the value using the given formatter.

impl Display for ModelError

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

Formats the value using the given formatter.

impl Error for ModelError

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

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.