Enum RestoreError 

#[non_exhaustive]
pub enum RestoreError {
    Study {
        index: usize,
        error: StudyError,
    },
    Settings(ChartSettingsError),
    Layout(&'static str),
    Drawings(LoadError),
}

Why Chart::restore did not show a snapshot.

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.

Study

A saved study cannot be rebuilt, or reads a study or plot the snapshot does not have.

Fields

index: usize

The study’s position in ChartSnapshot::studies.

error: StudyError

Why.

Settings(ChartSettingsError)

The saved chart settings are invalid.

Layout(&'static str)

The saved panes, scales, series or view are out of range; the text says which.

Drawings(LoadError)

The saved drawings cannot be read.

Trait Implementations

impl Debug for RestoreError

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

Formats the value using the given formatter.

impl Display for RestoreError

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

Formats the value using the given formatter.

impl Error for RestoreError

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.