[Solved] What will be the output of this Ruby code? def greet_all(*names) names.map { |name| "Hello, #{name}!" } end p greet_all('Alice', 'Bob') | Ruby

Ruby - Methods

What will be the output of this Ruby code?

def greet_all(*names)
  names.map { |name| "Hello, #{name}!" }
end

p greet_all('Alice', 'Bob')

Anil

B"Hello, Alice! Hello, Bob!"

CError: undefined method 'map' for Array

D["Hello, Alice!", "Hello, Bob!"]

Step-by-Step Solution

Solution:

Step 1: Analyze the method behavior
The method collects all names into an array and uses map to create a new array with greetings.
Step 2: Evaluate the output
Calling greet_all('Alice', 'Bob') returns an array with two greeting strings.
Final Answer:
["Hello, Alice!", "Hello, Bob!"] -> Option D
Quick Check:
map transforms each element in *args array [OK]

Quick Trick: Use map on *args array to transform each argument [OK]

Common Mistakes:

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