boost::openmethod::policies::type_hash :: Boost.OpenMethod

# boost::openmethod::policies::type_hash

Policy for hashing type ids.

## Synopsis

Declared in `<boost/openmethod/preamble.hpp>`

    struct type_hash;

## Requirements

Classes implementing this policy must:

- derive from `rtti`.

- provide a `fn<Registry>` metafunction that conforms to the `TypeHashFn` blueprint.

## Types

Name
`category`

## Derived Classes

Name | Description
--- | ---
`fast_perfect_hash` | Hash type ids using a fast, perfect hash function.

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