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< b > SaddCommand: Contents< / b > < br > < a href = "#SADD _key_ _member_" > SADD _key_ _member_< / a > < br > < a href = "#Return value" > Return value< / a >
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ï » ¿ #sidebar < a href = "SetCommandsSidebar.html" > SetCommandsSidebar< / a > < h1 > < a name = "SADD _key_ _member_" > SADD _key_ _member_< / a > < / h1 >
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< i > Time complexity O(1)< / i > < blockquote > Add the specified < i > member< / i > to the set value stored at < i > key< / i > . If < i > member< / i > is already a member of the set no operation is performed. If < i > key< / i > does not exist a new set with the specified < i > member< / i > as sole member iscreated. If the key exists but does not hold a set value an error isreturned.< / blockquote >
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< h2 > < a name = "Return value" > Return value< / a > < / h2 > < a href = "ReplyTypes.html" > Integer reply< / a > , specifically:< br / > < br / > < pre class = "codeblock python" name = "code" >
1 if the new element was added
0 if the element was already a member of the set
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