Ruby - Classes and Objects
Which Ruby expression correctly tests if variables
x and y reference the same object?Which Ruby expression correctly tests if variables x and y reference the same object?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify method for object identity
The methodequal?checks if two variables point to the same object.Step 2: Review other options
==compares content,eql?is for hash key equality, and comparingobject_idtoclassis invalid.Final Answer:
x.equal?(y) -> Option DQuick Check:
equal?tests object identity [OK]
Quick Trick: Use equal? to check if two variables are the same object [OK]
Common Mistakes:
- Using == instead of equal? for object identity
- Confusing eql? with equal?
- Comparing object_id to class instead of object_id to object_id
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