return this.eachSlice(number, function(slice) { while(slice.length < number) slice.push(fillWith); return slice; 
this.each(function(value, index) { if (iterator(value, index)) { result = value; throw $break; } 
    return this.eachSlice(number, function(slice) {      while(slice.length < number) slice.push(fillWith);      return slice;    });
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