How can you use a Kotlin when expression to differentiate between Int values inside the range 1..10, Double values, and all other types, returning a different message for each?
hard📝 Application Q9 of 15
Kotlin - Control Flow as Expressions
How can you use a Kotlin when expression to differentiate between Int values inside the range 1..10, Double values, and all other types, returning a different message for each?
AUse <code>is Int</code> with <code>in 1..10</code>, <code>is Double</code>, and <code>else</code> branches.
BUse <code>in 1..10</code> for all types, <code>is Double</code>, and <code>else</code>.
CUse <code>is Int in 1..10</code>, <code>is Double</code>, and <code>else</code>.
DUse <code>is Int</code>, <code>is Double in 1..10</code>, and <code>else</code>.
Step-by-Step Solution
Solution:
Step 1: Combine type and range checks properly
Check if value is Int and in 1..10 using nested conditions inside when.
Step 2: Use separate branches for Double and else
Use is Double branch and else for all other cases.
Final Answer:
Use is Int with in 1..10, is Double, and else branches. -> Option A
Quick Check:
Combine type and range checks correctly in when = A [OK]
Quick Trick:Check type first, then range inside when branch [OK]
Common Mistakes:
MISTAKES
Trying to combine 'is Int in 1..10' which is invalid
Using range check without type check
Misplacing range check on Double type
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