What is a unary function

A unary function (also known as a monadic function) is a function that accepts exactly one argument. The term "unary" simply refers to the function's arity—the number of arguments it takes.

Let us take an example of unary function,

const unaryFunction = (a) => console.log(a + 10); // This will add 10 to the input and log the result
unaryFunction(5); // Output: 15

In this example:

• unaryFunction takes a single parameter a, making it a unary function.
• It performs a simple operation: adding 10 to the input and printing the result.