Bird
0
0

What does type inference mean in Kotlin?

easy📝 Conceptual Q11 of 15
Kotlin - Variables and Type System
What does type inference mean in Kotlin?
AThe compiler automatically figures out the variable's type.
BYou must always specify the variable type manually.
CThe program runs slower because types are guessed at runtime.
DIt means variables cannot change their values.
Step-by-Step Solution
Solution:

  1. Step 1: Understand type inference concept

    Type inference means the compiler looks at the value assigned and decides the variable's type automatically.

  2. Step 2: Compare options with definition

    Only The compiler automatically figures out the variable's type. correctly describes this automatic type detection by the compiler.

  3. Final Answer:

    The compiler automatically figures out the variable's type. -> Option A

  4. Quick Check:

    Type inference = automatic type detection [OK]
Quick Trick: Type inference means no need to write types explicitly [OK]
Common Mistakes:
MISTAKES
  • Thinking types are guessed at runtime
  • Believing you must always write types
  • Confusing type inference with variable mutability

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Kotlin Quizzes
Collections Fundamentals - Array creation and usage - Quiz 5medium Collections Fundamentals - Collection size and emptiness checks - Quiz 13medium Data Types - Boolean type and logical operators - Quiz 5medium Functions - Why functions are first-class in Kotlin - Quiz 8hard Functions - Parameters with default values - Quiz 12easy Loops and Ranges - While and do-while loops - Quiz 6medium Loops and Ranges - For loop with ranges - Quiz 9hard Null Safety - Let function with safe calls - Quiz 6medium Null Safety - Elvis operator (?:) for default values - Quiz 12easy Variables and Type System - Explicit type declaration - Quiz 5medium