Which Ruby expression correctly returns true if the variable item is nil?

easy📝 Conceptual Q2 of 15

Ruby - Variables and Data Types

Which Ruby expression correctly returns true if the variable item is nil?

A<code>item.empty?</code>

B<code>item == false</code>

C<code>item.nil?</code>

D<code>item == 0</code>

Step-by-Step Solution

Solution:

Step 1: Identify the method to check nil
Ruby provides the nil? method to check if an object is nil.
Step 2: Evaluate other options
item == false checks for false, not nil; empty? is for collections; item == 0 checks for zero.
Final Answer:
item.nil? -> Option C
Quick Check:
nil.nil? returns true [OK]

Quick Trick: Use .nil? method to check for nil [OK]

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