SYNOPSIS
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#include <libmemcached/memcached.h>
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.. 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)
.. versionadded:: 0.53
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DESCRIPTION
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:func:`memcached_exist()` can be used to check if a key exists.
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RETURN
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:manpage:`memcached(1)` :manpage:`libmemcached(3)` :manpage:`memcached_strerror(3)`
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