Exams Attended

Mock Exams

Make Homepage

Bookmark this page

Subscribe Email Address

Ruby On Rails Interview Questions and Answers

Ques. How to define Instance variables?

Instance variables are defined using single @ symbol.

@foo = "Hello"

Within a class they can be declared as below:

class Animal
 attr_accessor :name, :age

Next you can query an object instance to find which instance variables it has.

anim = Animal.new
=> [ ]
anim.age = 3
 => [:@age, :@name] 

In the above case we did not put the @ symbol before the instance variables but it is implied. 

Is it helpful? Yes No

Most helpful rated by users:

©2021 WithoutBook