What are some examples of using Ruby's freeze method?

Can you give me some examples of using Ruby's freeze method?

Sure! The freeze method in Ruby is used to make an object immutable. For example, if you have a string like str = 'hello', calling str.freeze will prevent any modifications to that string.

What happens if I try to modify a frozen object?

If you try to modify a frozen object, Ruby will raise a FrozenError. For instance, if you try to do str << ' world' on a frozen string, you'll get an error.

Can I freeze arrays and hashes too?

Yes, you can freeze arrays and hashes as well. For example, arr = [1, 2, 3].freeze will make the array immutable, and any attempt to modify it will raise a FrozenError.

Are there any performance benefits to using freeze?

Yes, freezing objects can improve performance by reducing object duplication and memory usage, especially in large applications.