-===========================
-Determine if a keys exists.
-===========================
+Determine if a keys exists
+==========================
-.. index:: object: memcached_st
-
---------
SYNOPSIS
--------
#include <libmemcached/memcached.h>
+ Compile and link with -lmemcached
.. function:: memcached_return_t memcached_exist(memcached_st *ptr, char *key, size_t *key_length)
.. function:: memcached_return_t memcached_exist_by_key(memcached_st *ptr, char *group_key, size_t *group_key_length, char *key, size_t *key_length)
-Compile and link with -lmemcached
+ :param ptr: pointer to an initialized `memcached_st` struct
+ :param group_key: the key namespace
+ :param group_key_length: length of the `group_key` without any terminating zero
+ :param key: the key to check
+ :param key_length: length of the `key` without any terminating zero
+ :returns: `memcached_return_t` indicating success
.. versionadded:: 0.53
------------
DESCRIPTION
-----------
:func:`memcached_exist()` can be used to check if a key exists.
-------
-RETURN
-------
+RETURN VALUE
+------------
`MEMCACHED_SUCCESS`
The key exists.
`MEMCACHED_NOTFOUND`
The key was not found.
---------
SEE ALSO
--------
.. only:: man
- :manpage:`memcached(1)` :manpage:`libmemcached(3)` :manpage:`memcached_strerror(3)`
+ :manpage:`memcached(1)`
+ :manpage:`libmemcached(3)`
+ :manpage:`memcached_strerror(3)`
+.. only:: html
+ * :manpage:`memcached(1)`
+ * :doc:`../libmemcached`
+ * :doc:`memcached_strerror`