Private Constant

• If you want a constant to remain private, use private_consant

Regular Constant

• Regular constant is not private by default.

class Animal

FOOD = ["grass", "meat"].freeze

end

p Animal.constants

# Output:

$ruby main.rb

[:FOOD]

Private Constant

class Animal

FOOD = ["grass", "meat"].freeze

private_constant :FOOD

end

p Animal.constants

### Output:

$ruby main.rb

[]