Trait trie_db::HashDBRef

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pub trait HashDBRef<H, T>
where H: Hasher,
{ // Required methods fn get( &self, key: &<H as Hasher>::Out, prefix: (&[u8], Option<u8>), ) -> Option<T>; fn contains( &self, key: &<H as Hasher>::Out, prefix: (&[u8], Option<u8>), ) -> bool; }
Expand description

Trait for immutable reference of HashDB.

Required Methods§

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fn get( &self, key: &<H as Hasher>::Out, prefix: (&[u8], Option<u8>), ) -> Option<T>

Look up a given hash into the bytes that hash to it, returning None if the hash is not known.

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fn contains( &self, key: &<H as Hasher>::Out, prefix: (&[u8], Option<u8>), ) -> bool

Check for the existance of a hash-key.

Implementors§

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impl<'a, H, T> HashDBRef<H, T> for &'a dyn HashDB<H, T>
where H: Hasher,

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impl<'a, H, T> HashDBRef<H, T> for &'a mut dyn HashDB<H, T>
where H: Hasher,