[Solved] Which statement about Ruby's OpenStruct is TRUE? — Ans: OpenStruct allows adding and changing attributes dynamically at runtime | Ruby

Ruby - Metaprogramming Fundamentals

Which statement about Ruby's OpenStruct is TRUE?

AOpenStruct objects are immutable once created

BOpenStruct attributes can only be accessed using hash syntax

COpenStruct requires all attributes to be defined in advance

DOpenStruct allows adding and changing attributes dynamically at runtime

Step-by-Step Solution

Solution:

Step 1: Recall OpenStruct behavior
OpenStruct objects allow dynamic addition and modification of attributes anytime.
Step 2: Evaluate each statement
Immutability claim is false; objects are mutable. Hash syntax only is false; uses dot notation. All attributes predefined is false; dynamic addition allowed. Adding and changing dynamically at runtime is true.
Final Answer:
OpenStruct allows adding and changing attributes dynamically at runtime -> Option D
Quick Check:
OpenStruct mutability and dynamic attributes = true [OK]

Quick Trick: OpenStruct attributes are dynamic and mutable [OK]

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Which statement about Ruby's OpenStruct is TRUE?