Enum RestoreResult 

pub enum RestoreResult<S> {
    Direct(S),
    Migrated {
        state: S,
        from_version: u32,
    },
    DefaultFallback {
        error: MigrationError,
        default: S,
    },
}

Result of attempting state restoration with migration.

Variants

Direct(S)

State was restored directly (versions matched).

Migrated

State was successfully migrated from an older version.

Fields

state: S

from_version: u32

DefaultFallback

Migration failed; falling back to default state.

Fields

error: MigrationError

default: S

Implementations

impl<S> RestoreResult<S>

pub fn into_state(self) -> S

Extract the state value, regardless of how it was obtained.

pub fn was_migrated(&self) -> bool

Returns true if the state was migrated.

pub fn is_fallback(&self) -> bool

Returns true if we fell back to default.

Trait Implementations

impl<S: Debug> Debug for RestoreResult<S>

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

Formats the value using the given formatter.