See here for information on Set s. Essentially a Set is a collection of unique values - ie it can't contain duplicates. So new Set(ages) is a Set containing all the values in ages, which duplicates necessarily …

Dec 3, 2011 · In Eloquent JavaScript, Chapter 4, a set of values is created by creating an object and storing the values as property names, assigning arbitrary values (e.g. true) as property values. To …

Mar 10, 2015 · MDN references JavaScript's Set collection abstraction. I've got an array of objects that I'd like to convert to a set so that I am able to remove (.delete()) various elements by name: var array …

Nov 9, 2016 · Is it possible to use [...new Set()] to return an array of unique objects based on the inner id value? If this isn't possible, is there any other clever ES6 ways to achieve this output? Reference:

The old school way of adding all values of an array into the Set is: // for the sake of this example imagine this set was created somewhere else // and I cannot construct a new one out of an array...

Oct 12, 2016 · I came across this example for creating unique arrays with es6 [ ...new Set(array) ] Which seems to work fine until I tried it with an array of objects and it didn't return unique array. i.e. le...

May 31, 2017 · I'd like to have a set of objects in Javascript. That is, a data structure that contains only unique objects. Normally using properties is recommended, e.g. myset["key"] = true. However, I need ...

Dec 31, 2016 · Sets are supposed to contain unique objects, but it doesn't work for objects in javascript.

May 6, 2013 · I have turned on the Chrome flag for experimental ECMAscript 6 features, one of which is Set. As I understand, the details of Set are broadly agreed upon by the spec writers. I create a set a …

Sep 18, 2019 · If you want to change each item, either iterate over each item, deleting and adding again, or (as would probably be easier) transform it into an array and .map into a new Set. While you can do …