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<title>null_hash_fn Interface</title>
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<h1><tt>null_hash_fn</tt> Interface</h1>
<p>A "null" hash function, indicating that the combining hash
function is actually a ranged hash function.</p>
<p><a href=
"concepts.html#concepts_null_policies">Interface::Concepts::Null
Policy Classes</a> explains the concept of a null policy. See
also <a href=
"hash_based_containers.html#hash_policies">Design::Hash-Based
Containers::Hash Policies</a>.</p>
<p>Defined in: <a href=
"http://gcc.gnu.org/viewcvs/*checkout*/trunk/libstdc%2B%2B-v3/include/ext/pb_ds/hash_policy.hpp"><tt>hash_policy.hpp</tt></a></p>
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