Swift - Operators and Expressions
Which of the following is the correct way to negate a Boolean variable
isOpen in Swift?Which of the following is the correct way to negate a Boolean variable isOpen in Swift?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the negation operator
The NOT operator (!) negates a Boolean value in Swift.Step 2: Check syntax correctness
Only isOpen = !isOpen uses ! correctly to negate the variable.Final Answer:
isOpen = !isOpen -> Option CQuick Check:
Negate Boolean with ! operator [OK]
Quick Trick: Use ! before variable to negate Boolean [OK]
Common Mistakes:
- Using && or || to negate
- Using == for negation
- Missing ! operator
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