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Array.Find and IndexOf for multiple elements that are exactly the same object


Array.Find and IndexOf for multiple elements that are exactly the same object

By : user2948870
Date : November 15 2020, 06:54 AM
Any of those help I have trouble of getting index of the current element for multiple elements that are exactly the same object: , You can do this:
code :
$b = "A","D","B","D","C","E","D","F" 

(0..($b.Count-1)) | where {$b[$_] -eq 'D'}

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the object is in the array but indexOf doesn't find dit

the object is in the array but indexOf doesn't find dit


By : oaceballos
Date : March 29 2020, 07:55 AM
I hope this helps . What I'd like is to replace an element in the array of object $scope.users by another object. I was thinking to do like this: , I assume it is something like:
code :
var elementPos = array.map($filter('filter')($scope.users,{email: "email"}))
                      .indexOf(idYourAreLookingFor);
var objectFound = array[elementPos];
IndexOf Method for Multiple Properties in Object Array

IndexOf Method for Multiple Properties in Object Array


By : 大地 佐々木
Date : March 29 2020, 07:55 AM
help you fix your problem In ES6, there is the array method findIndex:
code :
let index = array.findIndex(
    element => element.color === 'red' && element.shape === 'circle'
);
var index = -1; // -1 if not found
for (var i = 0; i < array.length; ++i)
{
    var element = array[i];
    if (element.color === 'red' && element.shape === 'circle')
    {
        index = i;
        break;
    }
}
Can't find existing object in an array using indexOf in Angularjs

Can't find existing object in an array using indexOf in Angularjs


By : Shtd
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You may use array.find method to find a speaker by _id
code :
if (!$scope.speakerdata.find(function(s) { return s._id === speakerdatanew._id)) {
    $scope.speakerdata.push(speakerdatanew);
    console.log($scope.speakerdata); 
} 
Find common elements within dynamic array's object elements Javascript

Find common elements within dynamic array's object elements Javascript


By : hojjat
Date : March 29 2020, 07:55 AM
help you fix your problem Since a value can appear in array only once, you can concat the arrays, count the number of appearances, and filter our those that are not equal to the length of the original array.
code :
const findRecuring = (array) =>
  [...
    [].concat(...array.map((o) => Object.values(o)[0])) // combine to one array
   .reduce((m, v) => m.set(v, (m.get(v) || 0) + 1), new Map()) // count the appearance of all values in a map
 ] // convert the map to array of key/value pairs
 .filter(([, v]) => v === array.length) // filter those that don't appear enough times
 .map(([k]) => k); // extract just the keys

/** Test cases **/
console.log('Several:', findRecuring([
  {"key1":[6,1,2,3,8]},
  {"key2":[2,6,3,4,8]},
  {"key3":[2,5,6,8]},
]).join());

console.log('None: ', findRecuring([
  {"key1":[9,0,11]},
  {"key2":[2,6,3,4,8]},
  {"key3":[2,5,6,8]},
]).join());
C# To find exact string type element from Enumerable Object Array having Multiple elements in

C# To find exact string type element from Enumerable Object Array having Multiple elements in


By : user3173026
Date : March 29 2020, 07:55 AM
around this issue You are probably looking for Enumerable.Zip. It allows you to combine Items and ItemsElementName.
code :
var valuesByName = Items
  .Zip(ItemElementName, (i, n) => new KeyValuePair<string,object>(n.ToString(), i)))
  .Where(kv => kv.Value is string)
  .ToDictionary(x => x.Key, x => (string)x.Value);
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