What are first class functions and first order functions? Are both are same or not? Are there any similarities/difference between first order and first class functions in JavaScript?
I tried to get an answer, but didn't get a well-explained one.
Many sites only explain what is first-class function, not first-order functions. If both are the same, they don't mention it.
In JavaScript, a first-order function is a function that is not a higher-order function.
A higher-order function is a function that takes one or more functions as arguments, or returns a function as its result.
First-class functions are functions that can be used like any other value, such as being assigned to a variable, passed as an argument to a function or returned as a result from a function.
In JavaScript, all functions are first-class functions, so a first-order function is also a first-class function.
A first-order function is a function that does not take any other functions as arguments and does not return a function as its result. In contrast to higher-order functions, which either take functions as parameters or return functions, first-order functions deal only with basic data types or objects.
