Hi,

I am using freeBSD.
I know  std:set  can be used in C++  for set colleciton .  No similar
thing in standard C lib.

If I use only C  for developing some applicaiton on freeBSD,  is there
any   unix extension to standard C library or alternative library  for
'set'(i.e, uniqueness) operation?

BTW, what I mean by unix extension  is  something like  'insque' or
'remque'  which is not a part of standard C lib functions.

thanks

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