test.rb

def foo
    bar = "bar"
    arr = [1, 2, 3]
    arr.map {|a|
        fizz = "buzz" + a.to_s
        # this line is fine, blocks can access the enclosing scope
        print bar + "\n"
    }
    # this throws, fizz is only defined within the local block
    print fizz
end

foo