[Solved] What will be the output of this Ruby code? def empty_string?(str) str.empty? end puts empty_string?("") puts empty_string?("hello") | Ruby

Ruby - Methods

What will be the output of this Ruby code?

def empty_string?(str)
  str.empty?
end

puts empty_string?("")
puts empty_string?("hello")

Afalse\ntrue

Btrue\ntrue

Ctrue\nfalse

Dfalse\nfalse

Step-by-Step Solution

Solution:

Step 1: Understand the method behavior
The method empty_string? calls str.empty? which returns true if str is an empty string.
Step 2: Evaluate the calls
empty_string?("") returns true because "" is empty; empty_string?("hello") returns false because "hello" is not empty.
Final Answer:
true\nfalse -> Option C
Quick Check:
Empty string check returns true, non-empty returns false [OK]

Quick Trick: empty? returns true only for empty strings [OK]

Common Mistakes:

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