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PL_NewHashTable
===============
Create a new hash table.
Syntax
------
.. code::
#include <plhash.h>
PLHashTable *PL_NewHashTable(
PRUint32 numBuckets,
PLHashFunction keyHash,
PLHashComparator keyCompare,
PLHashComparator valueCompare,
const PLHashAllocOps *allocOps,
void *allocPriv
);
Parameters
~~~~~~~~~~
The function has the following parameters:
``numBuckets``
The number of buckets in the hash table.
``keyHash``
Hash function.
``keyCompare``
Function used to compare keys of entries.
``valueCompare``
Function used to compare keys of entries.
``allocOps``
A pointer to a ``PLHashAllocOps`` structure that must exist
throughout the lifetime of the new hash table.
``allocPriv``
Passed as the first argument (pool).
Returns
~~~~~~~
The new hash table.
Description
-----------
:ref:`PL_NewHashTable` creates a new hash table. The table has at least 16
buckets. You can pass a value of 0 as ``numBuckets`` to create the
default number of buckets in the new table. The arguments ``keyCompare``
and ``valueCompare`` are functions of type :ref:`PLHashComparator` that the
hash table library functions use to compare the keys and the values of
entries.
The argument ``allocOps`` points to a ``PLHashAllocOps`` structure that
must exist throughout the lifetime of the new hash table. The hash table
library functions do not make a copy of this structure. When the
allocation functions in ``allocOps`` are invoked, the allocation private
data allocPriv is passed as the first argument (pool). You can specify a
``NULL`` value for ``allocOps`` to use the default allocation functions.
If ``allocOps`` is ``NULL``, ``allocPriv`` is ignored. Note that the
default ``freeEntry`` function does not free the value of the entry.
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