snippet.js

    uniq: function() {
      var resultArray = this.clone().sort(function(a,b) { if(a == b || JSON.stringify(a) == JSON.stringify(b)) { return 0; } if(a > b || JSON.stringify(a) > JSON.stringify(b)) { return 1; } return -1; }),
          clone = this.clone(),
          first = 0,
          last = resultArray.length,
          sorted = arguments[0] || false;
      
      var unsort = function(sortedArray) {
        var result = [];
        var parsedSortedArray = $.map(sortedArray, function(i) { return JSON.stringify(i); }),
            parsedClone = $.map(clone, function(i) { return JSON.stringify(i); });
        
        for(var i = 0, len = parsedClone.length; i < len; i++) {
          if(!parsedSortedArray.length) { break; }
          var current = parsedClone[i],
              sortedIndex = parsedSortedArray.indexOf(current);
          
          if(sortedIndex != -1) {
            result.push(clone[i]);
            parsedSortedArray.splice(sortedIndex, 1);
          }
        }
        
        return result;
      };
      
      for(var alt; (alt = first) != last && ++first != last; ) {
        if(resultArray[alt] === resultArray[first] || JSON.stringify(resultArray[alt]) == JSON.stringify(resultArray[first])) {
          for(; ++first != last;) {
            if (resultArray[alt] !== resultArray[first] && JSON.stringify(resultArray[alt]) != JSON.stringify(resultArray[first])) { resultArray[++alt] = resultArray[first]; }
          }
          ++alt;
          resultArray.length = alt;
          return sorted ? resultArray : unsort(resultArray);
        }
      }
      
      return sorted ? resultArray : unsort(resultArray);
    },