Which of the following is the correct syntax to create a new class with Class.new and add a method greet that returns "Hello"?

easy📝 Syntax Q12 of 15

Ruby - Metaprogramming Fundamentals

Which of the following is the correct syntax to create a new class with Class.new and add a method greet that returns "Hello"?

AMyClass = Class.new do def greet return "Hello" end end

BMyClass = Class.new { greet() = "Hello" }

CMyClass = Class.new { def greet; "Hello"; end }

DMyClass = Class.new { def greet() puts "Hello" }

Step-by-Step Solution

Solution:

Step 1: Check correct block syntax for Class.new
The block can be given with curly braces or do-end. Inside, method definitions use def method_name; ...; end.
Step 2: Validate method definition and return value
MyClass = Class.new { def greet; "Hello"; end } correctly defines greet returning "Hello". MyClass = Class.new do def greet return "Hello" end end is correct syntax but missing the 'end' for the block in MyClass = Class.new do def greet return "Hello" end end, so MyClass = Class.new do def greet return "Hello" end end is invalid as given. MyClass = Class.new { greet() = "Hello" } uses invalid method syntax. MyClass = Class.new { def greet() puts "Hello" } uses puts which prints but does not return the string.
Final Answer:
MyClass = Class.new { def greet; "Hello"; end } -> Option C
Quick Check:
Correct method syntax inside Class.new block = MyClass = Class.new { def greet; "Hello"; end } [OK]

Quick Trick: Use def inside Class.new block with proper syntax [OK]

Common Mistakes:

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