Swift - Data Types
Which Swift code snippet correctly declares a string and creates an independent copy of it?
Which Swift code snippet correctly declares a string and creates an independent copy of it?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Declare a string
Usingvar original = "Swift"correctly declares a mutable string.Step 2: Copy the string
Assigningvar copy = originalcreates a value copy because String is a value type.Step 3: Analyze other options
Options B and C use address operators incorrectly; D tries casting to reference type which is invalid.Final Answer:
var original = "Swift" var copy = original -> Option DQuick Check:
Simple assignment copies string value [OK]
Quick Trick: Assigning strings copies values, no pointers needed [OK]
Common Mistakes:
- Using & operator to copy strings
- Casting strings to reference types incorrectly
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