Q1991. How Do You Add Elements To A Dictionary In Python?
We can add elements by modifying the dictionary with a fresh key and then set the value to it. ```python >>> # Setup a blank dictionary ``` >>> site_stats = {} ```python ...
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Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (2,728 available).
Q1992. What is the event queue?
The event queue follows the queue data structure. It stores async callbacks to be added to the call stack. It is also known as the Callback Queue or Macrotask Queue. When...
Q1993. What are the differences between useEffect and useLayoutEffect hooks?
useEffect and useLayoutEffect are both React hooks that can be used to synchronize a component with an external system, such as a browser API or a third-party library. Ho...
Q1994. How does reactivity works with ref?
VueJS automatically detects the changes to ref's value and updates the DOM with a dependency-tracking based reactivity system. 1. When a component is rendered for the fir...
Q1995. How Do You Delete Elements Of A Dictionary In Python?
We can delete a key in a dictionary by using the del() method. ```python >>> site_stats = {'site': 'tecbeamers.com', 'traffic': 10000, "type": "organic"} ``` >>> del site...
Q1996. What is a decorator?
A decorator is an expression that evaluates to a function and that takes the target, name, and decorator descriptor as arguments. Also, it optionally returns a decorator ...
Q1997. What are the differences between Functional and Class Components?
There are two different ways to create components in ReactJS. The main differences are listed down as below, ## 1. Syntax: The class components uses ES6 classes to create...
Q1998. How to use composition API in Vue2.0?
Vue 2.0 does not have native support for the Composition API, but you can use it via the official plugin: `@vue/composition-api`. Let's see the usage in step-by-step inst...
Q1999. How Do You Check The Presence Of A Key In A Dictionary?
We can use Python's "in" operator to test the presence of a key inside a dict object. ```python >>> site_stats = {'site': 'tecbeamers.com', 'traffic': 10000, "type": "org...
Q2000. What are the properties of the Intl object?
Below are the list of properties available on the `Intl` object, 1. **Collator:** These are the objects that enable language-sensitive string comparison. 2. **DateTimeFor...