/TypeScript/Remove duplicate objects based on id from array angular 8

Remove duplicate objects based on id from array angular 8

this.item = this.item.filter((el, i, a) => i === a.indexOf(el))

How to remove duplicate array object in javascript

var arrayWithDuplicates = [
    {"type":"LICENSE", "licenseNum": "12345", state:"NV"},
    {"type":"LICENSE", "licenseNum": "A7846", state:"CA"},
    {"type":"LICENSE", "licenseNum": "12345", state:"OR"},
    {"type":"LICENSE", "licenseNum": "10849", state:"CA"},
    {"type":"LICENSE", "licenseNum": "B7037", state:"WA"},
    {"type":"LICENSE", "licenseNum": "12345", state:"NM"}
];

function removeDuplicates(originalArray, prop) {
     var newArray = [];
     var lookupObject  = {};

     for(var i in originalArray) {
        lookupObject[originalArray[i][prop]] = originalArray[i];
     }

     for(i in lookupObject) {
         newArray.push(lookupObject[i]);
     }
      return newArray;
 }

var uniqueArray = removeDuplicates(arrayWithDuplicates, "licenseNum");
console.log("uniqueArray is: " + JSON.stringify(uniqueArray));

Source: stackoverflow.com

Remove duplicate objects based on id from array angular 8

function getUnique(arr, comp) {

                    // store the comparison  values in array
   const unique =  arr.map(e => e[comp])

                  // store the indexes of the unique objects
                  .map((e, i, final) => final.indexOf(e) === i && i)

                  // eliminate the false indexes & return unique objects
                 .filter((e) => arr[e]).map(e => arr[e]);

   return unique;
}

console.log(getUnique(arr,'id'));

Source: reactgo.com

Similar codes

0 vote239 views1 answer
Collection that accepts duplicate keys
TypeScript
0 vote237 views1 answer
A korean movie where a man gets kidnapped by a family
TypeScript
0 vote251 views1 answer
PYTHON STACK FUNCTION count the valid number of brackets Returns the total number of valid brackets in the string
TypeScript
0 vote231 views9 answers
Twitter analysis in R clean tweets
TypeScript
0 vote248 views2 answers
Ixl ansers
TypeScript
0 vote254 views1 answer
Breaks_width in r
TypeScript
1 vote260 views1 answer
:= and = in gdscript
TypeScript
0 vote237 views1 answer
Import fonts from angular.json file
TypeScript
-1 vote266 views2 answers
Module '"@angular/fire/firestore"' has no exported member 'AngularFirestore'
TypeScript
0 vote224 views1 answer
Style type in typescript in react
TypeScript