What are function parameters in Ruby?

What are function parameters in Ruby?

Function parameters in Ruby are variables that you can pass to methods to provide input. They allow methods to accept data.

Can you give me an example of a function with parameters?

Sure! Here's a simple example:

def greet(name)
  "Hello, "+name+
end

puts greet("Alice")  # Output: Hello, Alice

What happens if I don't provide a parameter?

If you don't provide a parameter, Ruby will raise an ArgumentError unless the parameter has a default value.

How do I set default values for parameters?

You can set default values by assigning them in the method definition, like this:

def greet(name="Guest")
  "Hello, "+name+
end

puts greet()  # Output: Hello, Guest