Struct native_db::transaction::query::RwLen

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pub struct RwLen<'db, 'txn> { /* private fields */ }

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impl RwLen<'_, '_>

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pub fn primary<T: Input>(&self) -> Result<u64>

Get the number of values.

Same as RLen::primary().

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pub fn secondary<T: Input>( &self, _key_def: impl KeyDefinition<DatabaseSecondaryKeyOptions> ) -> Result<Option<T>>

Get the number of values by secondary key.

Same as RLen::secondary().

Auto Trait Implementations§

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impl<'db, 'txn> Freeze for RwLen<'db, 'txn>

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impl<'db, 'txn> !RefUnwindSafe for RwLen<'db, 'txn>

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impl<'db, 'txn> Send for RwLen<'db, 'txn>

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impl<'db, 'txn> Sync for RwLen<'db, 'txn>

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impl<'db, 'txn> Unpin for RwLen<'db, 'txn>

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impl<'db, 'txn> !UnwindSafe for RwLen<'db, 'txn>

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impl<T> Any for T
where T: 'static + ?Sized,

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type Error = Infallible

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where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.