What are first-class functions in programming?
First-class functions are functions that can be treated like any other variable. They can be assigned to variables, passed as arguments, or returned from other functions.
Can you give me an example of a first-class function?
Sure! In JavaScript, you can assign a function to a variable like this: const greet = function() { return 'Hello!'; };
Now, greet
is a first-class function.
How do first-class functions differ from regular functions?
The term 'first-class' means that functions can be used as values. Regular functions are just functions, but first-class functions can be passed around and manipulated.
What are the benefits of using first-class functions?
They promote higher-order functions, enable functional programming techniques, and enhance code reusability and modularity.
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