在AngularJS中链接未知数量的承诺

var promises = [];
var AllResults = [];
$scope.requests = [
    {
        "uri":"http://foo/bar/action1","name":"Action1"
    },{
        "uri":"http://bar/foo/action2","name":"Action2"
    },{...},{...}
];
var ParseMyResultsArray = function(){
    console.log(AllResults);
    //...
};

angular.forEach($scope.requests,function(request){
    var promise = $http.get(request.uri);
    promises.push(promise);
});

angular.forEach(promises,function(promise){
    promise.then(function(results){
        AllResults.push(results);
    });
});

//Then,when all promise are resolved...
ParseMyResultsArray();

如果在不知道请求数组的大小的情况下解析了所有的promises,我怎么能确定调用ParseMyResultsArray()？

谢谢你的帮助！