What are some examples of variadic functions in different programming languages?

What are some examples of variadic functions in different programming languages?

Variadic functions are functions that can take a variable number of arguments. For example, in C, you can use stdarg.h to create a variadic function like printf. In Python, you can use *args to accept a variable number of arguments in a function.

Can you give me a specific example in JavaScript?

Sure! In JavaScript, you can define a variadic function using the rest parameter syntax. For example:

function sum(...numbers) {
    return numbers.reduce((acc, curr) => acc + curr, 0);
}

This function takes any number of arguments and returns their sum.

What about in Ruby?

In Ruby, you can use the splat operator * to create a variadic function. For example:

def greet(*names)
  names.each { |name| puts "Hello, #{name}!" }
end

This function greets each name passed to it.

Are there any variadic functions in Java?

Yes! In Java, you can use varargs to create a variadic function. For example:

public void printNumbers(int... numbers) {
    for (int number : numbers) {
        System.out.println(number);
    }
}

This method can take any number of integer arguments.