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What type of data structure is a Swift dictionary?

easy📝 Conceptual Q1 of 15
Swift - Collections
What type of data structure is a Swift dictionary?
AA collection of key-value pairs
BAn ordered list of values
CA single value container
DA sequence of characters
Step-by-Step Solution
Solution:

  1. Step 1: Understand dictionary basics

    A dictionary stores data as pairs, where each key maps to a value.

  2. Step 2: Compare with other data structures

    Unlike lists or strings, dictionaries organize data by keys, not order or sequence.

  3. Final Answer:

    A collection of key-value pairs -> Option A

  4. Quick Check:

    Dictionary = key-value pairs [OK]
Quick Trick: Dictionaries store data as key-value pairs [OK]
Common Mistakes:
  • Confusing dictionaries with arrays
  • Thinking dictionaries are ordered lists
  • Assuming dictionaries hold single values

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