Javascript Array unique(a)

var a = [//from   w ww  .ja  v  a  2s.co  m
    [0, 0, 0, 0, 0],
    [1, 0, 0, 1, 1],
    [1, 1, 1, 1, 1]
];

Array.prototype.unique=function(a){
  return function(){return this.filter(a)}}(function(a,b,c){return c.indexOf(a,b+1)<0
});

console.log(a[2].unique());
console.log(a);

Array.prototype.unique = function (a) {
    return function () { return this.filter(a); };
}(function (a, b, c) {
    return c.indexOf(a, b + 1) < 0;
});//from www .  j av  a 2 s  .  c  o m

/**/*from   w ww .  j  a va 2  s. c o  m*/
 * This file contains prototype extensions for default javascript handlers
 */

/**
 * Array unique for javascript array.
 *
 * @type    {Array.prototype.unique}
 *
 * @returns {array}
 */
Array.prototype.unique = function(a) {
    return function(){return this.filter(a)}}(function(a,b,c){return c.indexOf(a,b+1)<0
});

Array.prototype.unique = function(a){
    return function(){ return this.filter(a) }
}(function(a,b,c){ return c.indexOf(a,b+1) < 0 });

var num = 0;//from  w w w . j a  v  a  2 s. c  o m
var uniqs2 =1000;
require('fs').readFileSync('8.txt').toString().split('\n').forEach(function (line) { 
 
 var arr = [];
 for(i=0;i<line.length/32;i++){

  arr.push(line.substring(i*32, i*32+31))

 }
 num++;
 uniqs1=arr.unique().length;
 if(uniqs1<uniqs2){numf=num;uniqs2=uniqs1;}
    //console.log('Linia:'+num+' '+arr.unique().length)

}) 
console.log('Linia:'+numf)