# Trait ethcore::db::Key [−] [src]

    pub trait Key<T> {
        type Target: Deref<Target=[u8]>;
        fn key(&self) -> Self::Target;
    }

Should be used to get database key associated with given value.

## Associated Types

### `type Target: Deref<Target=[u8]>`

The db key associated with this value.

## Required Methods

### `fn key(&self) -> Self::Target`

Returns db key.

## Implementors

- `impl Key<FlatBlockTraces> for H256`
- `impl Key<H256> for BlockNumber`
- `impl Key<BlockDetails> for H256`
- `impl Key<TransactionAddress> for H256`
- `impl Key<BlockReceipts> for H256`

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