Angular: transclude example 1.3

http://angularjs.org/

HTML

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.8/angular.js"></script>
<div ng-controller="MainCtrl">
    <div class="row" ng-repeat="item in placeholders">
        <div ng-class="col-md-{{12 / placeholders.length | parseInt}}">col-md- {{12 / placeholders.length | parseInt}}</div>
    </div>

JavaScript

var myApp = angular.module('myApp', []);

        myApp.filter('parseInt', function () {
            return function (a, b) {
                return (parseInt(a))
            }
        });
        myApp.controller('MainCtrl', ['$scope', function ($scope) {


            $scope.placeholders = [{
                name: "1",
            }, {
                name: "3",
            }, {
                name: "4",
            }, {
                name: "5"
            }];
        }]);