Swift - Operators and Expressions
Which of the following is the correct syntax to create a half-open range from 0 to 9 in Swift?
Which of the following is the correct syntax to create a half-open range from 0 to 9 in Swift?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify half-open range syntax
The half-open range operator in Swift is..<, which includes the start but excludes the end.Step 2: Apply to the range 0 to 9
To include numbers 0 through 9, use0..<10because 10 is excluded.Final Answer:
0..<10 -> Option BQuick Check:
..<excludes end [OK]
Quick Trick: Use ..< to exclude the last number in range [OK]
Common Mistakes:
- Using ... when half-open range is needed
- Writing 0..9 which is invalid syntax
- Confusing end number inclusion
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