A class constructor in Ruby is defined by adding an "initialize
" method to the class like so:
class Entity
def initialize
puts "Object instance was created"
end
end
Entity.new # output: "Object instance was created"
The initialize
method is called each time an object instance of the class is created using the new
method. Any arguments passed to new
are automatically be passed to the initialize
method. For example:
class Person
def initialize(name, age)
@name = name
@age = age
end
def name
@name
end
def age
@age
end
end
person = Person.new("John", 22)
puts "#{person.name} is #{person.age} years old"
# output: "John is 22 years old"
This post was published by Daniyal Hamid. Daniyal currently works as the Head of Engineering in Germany and has 20+ years of experience in software engineering, design and marketing. Please show your love and support by sharing this post.