Ruby - Class Methods and Variables
What will this Ruby code print?
class Example
@value = 5
def self.value
@value
end
end
puts Example.valueWhat will this Ruby code print?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand class instance variable
@value defined on class itself is a class instance variable accessible by class methods.Step 2: Call class method
Example.value returns @value which is 5.Final Answer:
5 -> Option AQuick Check:
Class instance variable accessed by class method = 5 [OK]
Quick Trick: Class instance variables use single @ in class methods [OK]
Common Mistakes:
- Confusing class instance variables with class variables
- Expecting nil because @value looks like instance variable
- Thinking @value is undefined
Master "Class Methods and Variables" in Ruby
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