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What is a key characteristic of a Ruby Symbol?

easy📝 Conceptual Q11 of 15
Ruby - Variables and Data Types

What is a key characteristic of a Ruby Symbol?

AIt is immutable and unique for the same name
BIt can be changed after creation
CIt stores large amounts of data
DIt behaves like a string with spaces
Step-by-Step Solution
Solution:

  1. Step 1: Understand what a Symbol is

    A Symbol in Ruby is a name or label that is immutable, meaning it cannot be changed once created.

  2. Step 2: Recognize uniqueness of Symbols

    Two Symbols with the same name always refer to the same object, making them unique and memory efficient.

  3. Final Answer:

    It is immutable and unique for the same name -> Option A

  4. Quick Check:

    Symbol = immutable and unique [OK]
Quick Trick: Symbols never change and are unique by name [OK]
Common Mistakes:
MISTAKES
  • Thinking symbols can be modified like strings
  • Confusing symbols with regular strings
  • Assuming symbols store large data
  • Believing symbols allow spaces like strings

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