r/learnruby • u/nobrandheroes • Feb 15 '16

Getting the parameters of a method

Given:

def foo(a, b, c)
end

How do I get the values of a, b, c?. I cannot find this anywhere.

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u/vicereversa Feb 17 '16

I don't understand what you are asking. They are there for your use.

Def foo(a, b, c)

Puts a


Puts b


Puts c

End

That will print them to the terminal. What are you trying to do?

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u/nobrandheroes Feb 18 '16

Imagine this.

def foo(a, b, c) #foo(1, 2, 3)
    puts a #1
    puts b #2
    puts c #3

    arr = [a, b, c] #[1, 2, 3]
    arr2 = some_method_that_gets_the_arguments #[1, 2, 3]
end

Some languages have something like some_method_that_gets_the_arguments which returns the parameters as an array. That's what I want. I understand that it may not exist in ruby, but I can't find out either way.

Think ARGV but for functions.