The simplest of implementation for metadata:
No metadata, don’t take up space and don’t do anything
Returns the “default value” for a type. Read more
create a new metadata struct with default values
used if you don’t want to specify one on insert(…) Read more
run every time the key is added or re-added
as extra parameters you have: Read more
run every time the key is requested
impl<T> Any for T where
T: 'static + ?Sized,
[src]
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
impl<T, U> Into<U> for T where
U: From<T>,
[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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The type returned in the event of a conversion error.
The type returned in the event of a conversion error.
impl<V, T> VZip<V> for T where
V: MultiLane<T>,