Vedis Built-in Commands - Set/Lists
Add the specified members to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members. An error is returned when the value stored at key is not a set.
Refer to the download page for some C/C++ samples on how to invoke this command from your host application.
vedis> SCARD users