iOS Swift - State Management in SwiftUI
Which of the following is a correct declaration of a @State variable for a Boolean named isOn?
Which of the following is a correct declaration of a @State variable for a Boolean named isOn?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall correct syntax for @State declaration
The @State property wrapper is placed before the variable declaration, usually with private access.Step 2: Identify the correct syntax among options
@State private var isOn = true uses '@State private var isOn = true' which is the correct and common pattern.Final Answer:
@State private var isOn = true -> Option DQuick Check:
@State declaration syntax = '@State private var' [OK]
Quick Trick: Declare @State as '@State private var variableName' [OK]
Common Mistakes:
- Placing @State after var
- Omitting 'var' keyword
- Using @State without initialization
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