javascript array unique benchmarks

  var arr = [];

  for (var i = 0; i < 1000; i++) {
      arr.push(i);

      if (i > 0 && i % 10 == 0) {
          arr.push(i - 10);
      }
  }

  // https://twitter.com/judofyr/status/83901970494144513
  Array.prototype.judofyr=function(a,r,c,d,i){for(a=this.sort(),i=0,r=[a[i]];c=a[i++],d=a[i],i<this.length;)c===d||r.push(d);return r}

  // https://twitter.com/WebReflection/status/83867362490720258
  Array.prototype.WebReflection=function(a){return function(){return this.filter(a)}}(function(a,b,c){return c.indexOf(a,b+1)<0});

  // https://gist.github.com/1042640
  Array.prototype.abozhilov = (function () {
      var TYPE_MAP = {
          'object' : 1,
          'function' : 1
      }
      return function () {
          var map = {},
              objects = [],
              unique = [];
          for (var i = 0, len = this.length; i < len; i++) {
              var val = this[i];

              if (TYPE_MAP[typeof val] && val) {
                  if (!val.__unique__) {
                      unique.push(val);
                      objects.push(val);
                      val.__unique__ = 1;
                  }
              }
              else if (!map[val]) {
                  unique.push(val);
                  map[val] = 1;
              }
          }

          for (i = objects.length; i--;) {
              delete objects[i].__unique__;
          }

          return unique;
      };
  })();