repeatStyle.js

app.directive('repeatStyle', function(){

  var classes = [
    'first : $first',
    'last : $last',
    'middle : $middle',
    'odd : $odd',
    'even : $even'
  ].join(', ');
  
  return {
    priority: 1001,
    compile: function(tElm,tAttrs){
      if(!tAttrs.ngRepeat) return;
      tElm.attr('ng-class', '{' + classes + '}');
    }
  };
});

Use it like so:

<div ng-repeat="user in users" repeat-style>