我在<script >
var myApp = angular.module('myApp', []);
myApp.controller('studentController', ['$scope', '$http', function($scope, $http) {
$scope.searchitem = ''; // set the default search/filter term
$scope.users = [];
//Get List
$http({ method: 'GET', url: 'serve-products.php'
}).then(function successCallback(response) { $scope.users = response.data;}, function errorCallback(response) { alert("Error. Try Again!"); });
//Update list
$scope.refreshUser = function(user) { $http({ method: 'GET',
url: 'serve-products.php?d=' + user.code
}).then(function successCallback(response) { $scope.users = response.data;}, function errorCallback(response) { alert("Error. Try Again!"); }); };
}]);
</script>
<body class="container" ng-app="myApp" ng-controller="studentController" >
<form>
<div class="form-group">
<div class="input-group">
<input type="text" class="form-control" placeholder="Search" ng-model="searchitem" >
</div>
</div>
</form>
<table class="table table-condensed table-striped">
<thead>
<tr>
<td>ID</td>
<td>Name</td>
<td>Stock</td>
</tr>
</thead>
<tbody>
<tr ng-repeat="user in users | filter:searchitem ">
<td> {{user.code}} </td>
<td> {{user.name}} </td>
<td> <span ng-class="{'st0': user.stocktext == 'OUT OF STOCK'}"> {{user.stocktext}} </span></td>
<td>
<span ng-repeat="(key,value) in user.stock">
<span class="st{{value}}">{{key}}</span>
</span>
</td>
<td> <button class="btn btn-primary btn-sm" ng-click="refreshUser(user)">Refresh</button> </td>
</tr>
</tbody>
</table>
</body>
中有一个2 x 30的矩阵，由1和2组成。我想知道如何在矩阵的每个元素之前添加一个额外的R？
例如"p:"，依此类推。
这是我尝试没有成功的事情：
p1: 1, p2: 2, p3: 1, p4: 2答案 0 :(得分：2)
我们用序列paste'p'，然后用paste'a'matrix并将输出分配回'a'
a[] <- paste(paste0("p", 1:30), a, sep=": ")
答案 1 :(得分：0)
使用套用的另一种方法：
ReadableStream<string>