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+ +ScardCommand: Contents
  SCARD _key_
    Return value +
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ScardCommand

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+ #sidebar SetCommandsSidebar

SCARD _key_

+Time complexity O(1)
Return the set cardinality (number of elements). If the key does notexist 0 is returned, like for empty sets.
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Return value

Integer reply, specifically:

+the cardinality (number of elements) of the set as an integer.
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