In Computer Science, a Hash Table is a Data Structure. There are many data structure available such as Stack, Queue, Linked List, Set. Hash Table is another one which stores data in an associative manner.
Finding a complexity for a program is always an important task. It gives us clear indication of how much slower or faster our program will get when you give more data input at it.
In react when we pass a props down to its children, we like to use Context/Redux, this is not wrong but we don’t need to use this every time if parent has a small amount of children or child components.
Streams are core concept of nodejs. Streams are data (array or object), they do not process all at once rather than piece by piece.
The Intl object provides access to several constructors, each of them allows to do string comparison, number formatting and date and time formatting.
An expression is any valid set of literals, variables, operators that evaluates to a single value.