Swift - Data Types
Which of the following is the correct syntax to create a typealias for a tuple
(Int, String) named PersonInfo?Which of the following is the correct syntax to create a typealias for a tuple (Int, String) named PersonInfo?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand tuple typealias syntax
Tuples can be aliased using the same syntax:typealias Name = (Type1, Type2).Step 2: Validate options
Only typealias PersonInfo = (Int, String) uses the correct syntax withtypealiasand equals sign.Final Answer:
typealias PersonInfo = (Int, String) -> Option AQuick Check:
Tuple alias syntax = typealias Name = (Types) [OK]
Quick Trick: Use = after typealias, even for tuples [OK]
Common Mistakes:
- Omitting the equals sign
- Swapping type and alias name
- Using 'alias' instead of 'typealias'
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