How to access global variables inside functions

Question

I have following simple code:

line = "Hello"

def myfn()
    puts line
end

myfn()

The variable line is not accessible in function. How can global variables be accessed inside functions?

Answer 1

You could make it a constant via capitalization.

LINE = "Hello"

def myfn()
    puts LINE
end

myfn()

If you want it to be variable pass it in as an argument, that's what they're for.

line = "Hello"

def myfn(msg)
    puts msg
end

myfn(line)