Q2051. What is an object initializer?
An object initializer is an expression that describes the initialization of an Object. The syntax for this expression is represented as a comma-delimited list of zero or ...
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Q2052. How do you use immer library for state updates?
Immer library enforces the immutability of state based on **copy-on-write** mechanism. It uses JavaScript proxy to keep track of updates to immutable states. Immer has 3 ...
Q2053. What Is The Command To Debug A Python Program?
Python provides several tools to interactively debug programs from the command line: ### 1. The Built-in `breakpoint()` Function (Python 3.7+ - Recommended): Insert `brea...
Q2054. What is a constructor method?
The constructor method is a special method for creating and initializing an object created within a class. If you do not specify a constructor method, a default construct...
Q2055. What are the benefits of preventing the direct state mutations?
In React and modern JavaScript state management, **immutability** (preventing direct mutation of state objects and arrays) is a core foundational architectural requiremen...
Q2056. How Do You Monitor The Code Flow Of A Program In Python?
In Python, we can use the sys module's settrace() method to setup trace hooks and monitor the functions inside a program. You need to def ine a trace callback method and ...
Q2057. What happens if you write constructor more than once in a class?
The "constructor" in a class is a special method and it should be defined only once in a class. i.e, If you write a constructor method more than once in a class it will t...
Q2058. What are the preferred and non-preferred array operations for updating the state?
The below table represent preferred and non-preferred array operations for updating the component state. | Action | Preferred | Non-preferred | | --------- | ------------...
Q2059. How long can an identifier be in Python?
According to the official Python documentation, an identifier can be of any length. However, PEP 8 suggests that you should limit all lines to a maximum of 79 characters....
Q2060. How do you call the constructor of a parent class?
You can use the `super` keyword to call the constructor of a parent class. Remember that `super()` must be called before using `this` reference. Otherwise it will cause a...