Kotlin - Data Types
Which of the following Kotlin expressions correctly checks if a
Char is a digit?Which of the following Kotlin expressions correctly checks if a Char is a digit?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall Kotlin Char methods
Kotlin provides theisDigit()function as a member ofCharto check if the character is a digit.Step 2: Identify correct syntax
The correct usage is callingisDigit()as a function on theCharinstance, likech.isDigit().Final Answer:
ch.isDigit() -> Option BQuick Check:
Check digit with ch.isDigit() [OK]
Quick Trick: Use ch.isDigit() to check digits on Char [OK]
Common Mistakes:
MISTAKES- Using property syntax without parentheses
- Using non-existent isNumber() method
- Calling isDigit as a standalone function
Master "Data Types" in Kotlin
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