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Walkthrough - Kotlin: Unsigned Integer Types

Walkthrough - Kotlin: Unsigned Integer Types

In this lesson, we explored Kotlin's support for unsigned integer types. These types allow for representing non-negative values and utilizing the full bit range of the underlying numeric storage.

Changes Made

Implementation

  • Created UnsignedNumbers.kt which implements:
    • Unsigned Types: Demonstrating UByte, UShort, UInt, and ULong.
    • Literals: Using the u and uL suffixes.
    • Conversion: Showing how to convert between signed and unsigned types (e.g., toUInt()).
    • Unsigned Arrays: Using specialized array types like UByteArray and UIntArray with the @OptIn annotation.
    • Arithmetic and Ranges: Demonstrating that unsigned types support standard operations and can be used in ranges.
  • Updated App.java to execute the unsigned numbers demonstration.

Verification

  • Build: Successfully executed ./gradlew :app:assemble.
  • Logic: Verified that 10u / 3u result is 3u and that signed -1 converted to UInt results in 4294967295u, preserving the bit pattern.

See the Step-by-Step Explanation for technical details.

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