2021-06-15 00:49:18 -07:00
|
|
|
---
|
|
|
|
id: 587d8254367417b2b2512c71
|
2021-07-23 00:41:52 +05:30
|
|
|
title: Rimuovi elementi da un insieme in ES6
|
2021-06-15 00:49:18 -07:00
|
|
|
challengeType: 1
|
|
|
|
forumTopicId: 301713
|
|
|
|
dashedName: remove-items-from-a-set-in-es6
|
|
|
|
---
|
|
|
|
|
|
|
|
# --description--
|
|
|
|
|
2021-07-23 00:41:52 +05:30
|
|
|
Esercitiamoci con la rimozione di elementi da un Set ES6 utilizzando il metodo `delete`.
|
2021-06-15 00:49:18 -07:00
|
|
|
|
2021-07-23 00:41:52 +05:30
|
|
|
Per prima cosa, crea un Set ES6:
|
2021-06-15 00:49:18 -07:00
|
|
|
|
|
|
|
```js
|
|
|
|
var set = new Set([1,2,3]);
|
|
|
|
```
|
|
|
|
|
2021-07-23 00:41:52 +05:30
|
|
|
Ora rimuovi un elemento dal tuo Set con il metodo `delete`.
|
2021-06-15 00:49:18 -07:00
|
|
|
|
|
|
|
```js
|
|
|
|
set.delete(1);
|
|
|
|
console.log([...set]) // should return [ 2, 3 ]
|
|
|
|
```
|
|
|
|
|
|
|
|
# --instructions--
|
|
|
|
|
2021-07-23 00:41:52 +05:30
|
|
|
Ora, crea un set con gli interi 1, 2, 3, 4 e 5.
|
2021-06-15 00:49:18 -07:00
|
|
|
|
2021-07-23 00:41:52 +05:30
|
|
|
Rimuovi i valori 2 e 5, quindi restituisci il set.
|
2021-06-15 00:49:18 -07:00
|
|
|
|
|
|
|
# --hints--
|
|
|
|
|
2021-07-23 00:41:52 +05:30
|
|
|
Il Set deve contenere i valori 1, 3 e 4
|
2021-06-15 00:49:18 -07:00
|
|
|
|
|
|
|
```js
|
|
|
|
assert(
|
|
|
|
(function () {
|
|
|
|
var test = checkSet();
|
|
|
|
return test.has(1) && test.has(3) && test.has(4) && test.size === 3;
|
|
|
|
})()
|
|
|
|
);
|
|
|
|
```
|
|
|
|
|
|
|
|
# --seed--
|
|
|
|
|
|
|
|
## --seed-contents--
|
|
|
|
|
|
|
|
```js
|
|
|
|
function checkSet(){
|
2021-07-09 21:23:54 -07:00
|
|
|
// Only change code below this line
|
|
|
|
var set = null;
|
|
|
|
|
|
|
|
// Only change code above this line
|
|
|
|
return set;
|
2021-06-15 00:49:18 -07:00
|
|
|
}
|
|
|
|
```
|
|
|
|
|
|
|
|
# --solutions--
|
|
|
|
|
|
|
|
```js
|
|
|
|
function checkSet(){
|
|
|
|
var set = new Set([1,2,3,4,5]);
|
|
|
|
set.delete(2);
|
|
|
|
set.delete(5);
|
|
|
|
return set;}
|
|
|
|
```
|