js check if map contains key
const map1 = new Map();
map1.set('bar', 'foo');
console.log(map1.has('bar'));
// expected output: true
console.log(map1.has('baz'));
// expected output: falsejs check if map contains key
const map1 = new Map();
map1.set('bar', 'foo');
console.log(map1.has('bar'));
// expected output: true
console.log(map1.has('baz'));
// expected output: falseif hashmap contains only one key then how to get that key
HashMap<Node, Integer> x = qu.remove();
// This "qu" is a queue which is returning a Hashmap
// of type HashMap<Node, Integer> this hashmap contains
// only one key,value pair
Node node = x.keySet().iterator().next();
// here we are extracting that "KEY" of hashMap into variable of Node typeCopyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
