How could find unique objects from my object from perticular parameter in object

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var links = {
    1:{source: 0, target: 1},
    2:{source: 0, target: 2},
    3:{source: 0, target: 3},
    4:{source: 0, target: 4},
    5:{source: 0, target: 1},
    6:{source: 0, target: 4}  
};

this is my data and I want unique objects from it by parameter: target like

var result= {
    1:{source: 0, target: 1},
    2:{source: 0, target: 2},
    3:{source: 0, target: 3},
    4:{source: 0, target: 4},
};

You can do this without underscore by using Array.from with a Set to remove duplicates like so:

const links = [{source: 0, target: 1}, {source: 0, target: 2}, {source: 0, target: 3}, {source: 0, target: 4}, {source: 0, target: 1}, {source: 0, target: 4}]

const res = Array.from(new Set(links.map(JSON.stringify)), JSON.parse);
console.log(res);

Extract unique objects by attribute from array of objects , Given an array of objects and the task is to return the unique object by the attribute. differentiate the objects and need the object with minimum id number if of objects using Boolean property in JavaScript � Sort array of objects you find anything incorrect by clicking on the "Improve Article" button below. Parameter objects represent parameters associated with parameterized queries, or the in/out arguments and the return values of stored procedures. Depending on the functionality of the provider, some collections, methods, or properties of a Parameter object may not be available.

var visited = {}
Object.keys(links).forEach((key) => {
   var val = links[key].target;
   if(!visited[val]) {
      visited[val] = true;
   } else {
      delete links[key];
   }
})

if you don't want to edit existing object then instead of delete push it in new object; Note: Prefer arrays instead of object in your scenario.

Get-Unique (Microsoft.PowerShell.Utility), The Get-Unique cmdlet compares each item in a sorted list to the next item, You can also use the Unique parameter of Sort-Object to find the unique items in a� Now start deleting old parameters from the method one by one, replacing them in the code with fields of the parameter object. Test the program after each parameter replacement. When done, see whether there’s any point in moving a part of the method (or sometimes even the whole method) to a parameter object class.

var links = {
    1: { source: 0, target: 1 },
    2: { source: 0, target: 2 },
    3: { source: 0, target: 3 },
    4: { source: 0, target: 4 },
    5: { source: 0, target: 1 },
    6: { source: 0, target: 4 }
};

links = Object.keys(links).reduce((pre, cur) => {
    pre[cur] = JSON.stringify(links[cur])
    return pre
}, []);
links = [...new Set(links)].reduce((pre, cur, idx) => {
    if (cur) {
        pre[idx] = JSON.parse(cur)
    }
    return pre
}, {});

Use PowerShell to Choose Unique Objects from a Sorted List , When examining a specific property of an object and treating the Because the Get-Unique cmdlet requires sorting objects prior to piping, it is� In your scenario you've specified VehicleType as a name of the variable declared with a type object. You can't instantiate objects like this. If you can provide more information on your problem, I'll try to provide a more specific answer. For instance you could add a new property to your Vehicle class called VehicleType and it would be of type

You can try this way. This matches your expected input and output. Here, a hashable object is created and the key is generated based on source and target property. The purpose of the hashable object is to keep track if we pushed the same value before.

var links = {
    1: { source: 0, target: 1 },
    2: { source: 0, target: 2 },
    3: { source: 0, target: 3 },
    4: { source: 0, target: 4 },
    5: { source: 0, target: 1 },
    6: { source: 0, target: 4 }
};

var counter = 1,
hash = {},
result = {};

var linkArray = Object.values(links);

linkArray.forEach(function(elem) {
  const key = elem.source + '' + elem.target;
  if(!hash[key]){
    hash[key] = 1;
    result[counter] = elem;
    counter++;
  }
});

console.log(result);

Object, Objects can be created using the Object() constructor or the object initializer / literal syntax. See also the object initializer / literal syntax. Object.prototype. watch(): Adds a watchpoint to a property of the object. is a useful workaround to make a “base class” object of certain functions that act as objects. This SRFI defines parameter objects, the procedure make-parameter to create parameter objects and the parameterize special form to dynamically bind parameter objects. In the dynamic environment, each parameter object is bound to a cell containing the value of the parameter.

Object.create(), (But if the same object is created simply in a different order property-adding code-branches actually get executed at� Attach this untested function on a script on your player object. The function should then calculate the closest enemy to the player from an array of all enemies. It is the most straightforward, unoptimized way of doing it, but I doubt that with numbers within the 100 range, it would have any noticeable overhead.

Objects \ Processing.org, You look a certain way; perhaps you have brown hair, wear glasses, and appear slightly Object-oriented programming is the marriage of all of the programming Car object (and will be defined in the Car class, which we will get to in a moment). Class names are traditionally capitalized (to distinguish them from variable� Limits the query to unique results. Equals(Object) Determines whether the specified object is equal to the current object. (Inherited from Object) Except(ObjectQuery<T>) Limits the query results by excluding results based on the results of another object query. Execute(MergeOption) Executes the object query with the specified merge option

How to get the unique properties of a set of objects in a JavaScript , Given an array of objects, here's what you can do if you want to get the values of a property, but not duplicated. I set the ItemsSource of my grid to lstMainData in the constructor of my MainWindow. The user can highlight a row in the grid and press a button that is called ACCEPT. This button runs the following method that takes a string as parameter. I have other buttons that runs this method as well.

Comments
  • You should use an array instead,