Q331. What does this mean: *args, **kwargs? And why would we use it?
We use *args when we aren't sure how many arguments are going to be passed to a function, or if we want to pass a stored list or tuple of arguments to a function. **kwarg...
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Q332. What is the use of the `use client` directive in Next.js?
The `use client` directive is used to indicate that a component should be rendered on the client side. It allows you to write client-side logic in a component that can be...
Q333. How do you test your getters?
It is easier to test getters similar to mutations. It is recommended to test these getters if they have complicated computation. Let's take a simple todo filter as a gett...
Q334. What does len() do?
The built-in **`len()`** function returns the number of items (cardinality) in an object: ```python len("Python") # 6 (number of characters) len([1, 2, 3, 4, 5]) # 5 (num...
Q335. What is the procedure to run tests in node?
By proper mocking, you can bundle tests with webpack and run them on node without having depenceny on Browser API. It involves 2 steps, 1. **Create webpack config:** Crea...
Q336. What is the procedure to run tests in browser?
Below are the steps to run tests in real browser, 1. Install `mocha-loader`. 2. Configure webpack config entry point to 'mocha-loader!babel-loader!./test.js'. 3. Start we...
Q337. What are negative indexes and why are they used?
The sequences in Python are indexed and it consists of the positive as well as negative numbers. The numbers that are positive uses '0' that is uses as first index and '1...
Q338. The difference between `use server` and `use client` in Next.js?
- **`use server`**: Indicates that the function should be executed on the server side. It allows you to write server-side logic that can be called from the client side. -...
Q339. Can I use strict mode in production environment?
No, it is not recommended to use strict mode in production environment. Strict mode runs a synchronous deep watcher on the state tree for detecting inappropriate mutation...
Q340. Understand the concept of server actions in Next.js.
Server actions in Next.js allow you to define functions that can be executed on the server side when a form is submitted or an action is triggered. These functions can ha...