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Compare objects in angularjs


Compare objects in angularjs

By : s.y
Date : November 22 2020, 01:01 AM
I hope this helps you . It seems like you want to filter the comments to a particaular post. As you have said in comments, the Comment resource has a pid that ties it to a particular post.
The best way to accomplish the filtering is with an angular filter.
code :
    <ul>
        <li ng-repeat="comment in comments | filter:{ pid: post.id }">
            {{comment.content}}
        </li>
    </ul>


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Failed to compare 2 objects in the array (compare with inheritance and generic)

Failed to compare 2 objects in the array (compare with inheritance and generic)


By : Peter Oertel
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Firstly, the base class needs to implement IComparable.
Secondly, your sub class is trying to cast a Date as a DateTime (not always the case).
code :
public override int CompareTo(object obj) 
{
   var comparison = base.CompareTo(obj);
   if(comparison == 0 && obj is DateTime)
   {
      DateTime dt = (DateTime)obj;
      int res;

      res = this.Hours.CompareTo(dt.Hours);
      if (res != 0) return res;

      res = this.Minutes.CompareTo(dt.Minutes);
      if (res != 0) return res;

      return 0; 
    }
    return comparison;
}
 public int DoCompare(Date firstDate, Date secondDate)
 {
    int res;

    res = firstDate.Year.CompareTo(secondDate.Year); //Year is a property
    if (res != 0) return res;

    res = firstDate.Month.CompareTo(secondDate.Month);
    if (res != 0) return res;

    res = firstDate.Day.CompareTo(secondDate.Day);
    if (res != 0) return res;

    return 0;
 }
var test = DoCompare(new DateTime(8,11,2011,20,30), new Date(1, 2, 2011));
public int DoCompareDateTimes(DateTime firstDate, DateTime secondDate)
{
 int res;

 res = firstDate.Year.CompareTo(secondDate.Year); //Year is a property
 if (res != 0) return res;

 res = firstDate.Month.CompareTo(secondDate.Month);
 if (res != 0) return res;

 res = firstDate.Day.CompareTo(secondDate.Day);
 if (res != 0) return res;

 res = this.Hours.CompareTo(dt.Hours);
 if (res != 0) return res;

 res = this.Minutes.CompareTo(dt.Minutes);
 if (res != 0) return res;

 return 0;
}

var test = DoCompareDateTimes(new DateTime(8,11,2011,20,30), new Date(1, 2, 2011));
Angularjs compare two objects in ng-options

Angularjs compare two objects in ng-options


By : user3071044
Date : March 29 2020, 07:55 AM
I wish this help you In your example your objects don't have the same properties so they are not going to be equal when using angular.equals. Your selectedGenres object has a '$$hashKey' property on it (angular adds this) because you're not a specifying tracking property. The objects in your $scope.genres array don't have the '$$hashKey' property. That's why angular.equals is returning false.
If you add a track by property in your ng-options expression it will fix the issue.
code :
ng-options="option as option.name for option in genres track by option.id"
Compare 3 objects in AngularJS

Compare 3 objects in AngularJS


By : P. van Deursen
Date : March 29 2020, 07:55 AM
To fix the issue you can do Currently, AngularJS provide function angular.equals(obj1, obj2) to compare 2 objects, but I would like to do is compare 3 or 4 objects, AngularJS have any function support it? , Working demo :
code :
var myApp = angular.module('myApp',[]);

myApp.controller('MyCtrl',function ($scope) {
    var obj1 = {
    key1: "value1",
    key2: "value2",
    key3: {a: "aa", b: "bb"}
  }
  var obj2 = {
    key2: "value2",
    key1: "value1",
    key3: {a: "aa", b: "bb"}
  }
  var obj3 = {
    key2: "value2",
    key1: "value1",
    key3: {a: "aa", b: "bb"}
  }
  $scope.object1 = obj1;
  $scope.object2 = obj2;
  $scope.object3 = obj3;
  $scope.equals = angular.equals(obj1, obj2) && angular.equals(obj2, obj3);
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="MyCtrl">
  <br/>Obj1: {{object1}}
    <br/>Obj2: {{object2}}
    <br/>Obj3: {{object3}}
    <br/><br/>Objects are equal ? {{equals}}
</div>
Compare id's of objects in two lists and get the list of objects that includes objects with ids occurring in both of the

Compare id's of objects in two lists and get the list of objects that includes objects with ids occurring in both of the


By : peter
Date : March 29 2020, 07:55 AM
I hope this helps you . I have struggled with it for a long time. I have two collections: MyRepository.All and MyCollection, both holds the collection of objects which has ID property. I need to get result of list of objects from MyRepository.All what contains only objects which id's are equal to MyCollection's objects'ids.
How to compare two json objects using angularjs?

How to compare two json objects using angularjs?


By : Deepanshu Wadhwa
Date : March 29 2020, 07:55 AM
I hope this helps . 'Objects' do not have an order. angular.equals will compare values using their keys.
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