What are some examples of variable scope in Ruby?

What are some examples of variable scope in Ruby?

In Ruby, variable scope determines where a variable can be accessed. For example, local variables are only accessible within the method or block they are defined in.

Can you give me a specific example of local variable scope?

Sure! Here's an example:

def my_method
  local_var = 'I am local'
  puts local_var
end

my_method
puts local_var # This will raise an error because local_var is not accessible here.

What about instance variables? How do they work?

Instance variables in Ruby are prefixed with an '@' symbol and are accessible throughout the instance of a class. For example:

class MyClass
  def initialize
    @instance_var = 'I am an instance variable'
  end

  def show_var
    puts @instance_var
  end
end

obj = MyClass.new
obj.show_var # This will output: I am an instance variable