Struct Error 

pub struct Error { /* private fields */ }

A catboost error.

This is just a wrapper around an error message that can only be constructed by reading the last error message using the Error::fetch_catboost_error method.

Implementations

impl Error

pub fn call<T>(ret_val: bool, val: T) -> Result<T>

Shorthand for checking the result of a FFI call.

If the ret_val is true, the call was successfull and Ok(val) is returned. If the return value is false, the error message is fetched and returned.

pub fn fetch_catboost_error() -> Self

Fetch current error message from CatBoost using the sys::GetErrorString FFI call.

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 Error for Error

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.

impl PartialEq for Error

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Error

impl StructuralPartialEq for Error