Mastering Kotlin Essentials/

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Function Overloading and Function Formatting

Function Overloading and Function Formatting

Explore function overloading, infix notation, and precise formatting techniques.

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Function overloading

In Kotlin, we can define functions with the same name in the same scope (file or class) as long as they have different parameter types or a different number of parameters. This is known as function overloading. Kotlin decides which function to execute based on the types of the specified arguments.

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@Suppress("UNUSED_PARAMETER")
fun a(a: Any) = "Any"
@Suppress("UNUSED_PARAMETER")
fun a(i: Int) = "Int"
@Suppress("UNUSED_PARAMETER")
fun a(l: Long) = "Long"
fun main() {
    println(a(1)) // Int
    println(a(18L)) // Long
    println(a("ABC")) // Any
}

Remember: The @Suppress("UNUSED_PARAMETER") annotation suppresses warnings about unused parameters in Kotlin code. It instructs the compiler to ignore warnings about declared but unused parameters.

Infix syntax

Methods with a single parameter can use the infix modifier, which allows a special kind of function ...