Struct salsa::QueryTableMut[][src]

pub struct QueryTableMut<'me, Q> where
    Q: Query + 'me, 
{ /* fields omitted */ }
Expand description

Return value from the query_mut method on Database. Gives access to the set method, notably, that is used to set the value of an input query.

Implementations

Constructs a new QueryTableMut.

Assign a value to an “input query”. Must be used outside of an active query computation.

If you are using snapshot, see the notes on blocking and cancellation on the query_mut method.

Assign a value to an “input query”, with the additional promise that this value will never change. Must be used outside of an active query computation.

If you are using snapshot, see the notes on blocking and cancellation on the query_mut method.

Sets the size of LRU cache of values for this query table.

That is, at most cap values will be preset in the table at the same time. This helps with keeping maximum memory usage under control, at the cost of potential extra recalculations of evicted values.

If cap is zero, all values are preserved, this is the default.

Marks the computed value as outdated.

This causes salsa to re-execute the query function on the next access to the query, even if all dependencies are up to date.

This is most commonly used as part of the on-demand input pattern.

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Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.