lib/type/set.js
function sadd(members) {
  var i
    , c = 0;
  for(i = 0;i < members.length;i++) {
    if(!this._data[members[i]]) {
      this.setKey(members[i], 1);
      c++;
    }
  }
  return c;
}
function sadd(members) {
  var i
    , c = 0;
  for(i = 0;i < members.length;i++) {
    if(!this._data[members[i]]) {
      this.setKey(members[i], 1);
      c++;
    }
  }
  return c;
}
function sadd ( members ) { var i , c = 0 ; for ( i = 0 ; i < members . length ; i ++ ) { if ( ! this . _data [ members [ i ] ] ) { this . setKey ( members [ i ] , 1 ) ; c ++ ; } } return c ; }
Add the specified members to the set.
Add the specified members to the set .