Reified : Kotlin

Before we learn about reified,

This post was originally posted at https://agrawalsuneet.github.io/blogs/reified-kotlin/ and reposted on Medium on 8th Mar 2021.
package kotlin

/**
* Represents an array (specifically, a Java array when targeting the JVM platform).
* Array instances can be created using the [arrayOf], [arrayOfNulls] and [emptyArray]
* standard library functions.
* See [Kotlin language documentation](https://kotlinlang.org/docs/reference/basic-types.html#arrays)
* for more information on arrays.
*/
public class Array<T> {
/**
* Creates a new array with the specified [size], where each element is calculated by calling the specified
* [init] function.
*
* The function [init] is called for each array element sequentially starting from the first one.
* It should return the value for an array element given its index.
*/
public inline constructor(size: Int, init: (Int) -> T)

/**
* Returns the array element at the specified [index]. This method can be called using the
* index operator.
* ```
* value = arr[index]
* ```
*
* If the [index] is out of bounds of this array, throws an [IndexOutOfBoundsException] except in Kotlin/JS
* where the behavior is unspecified.
*/
public operator fun get(index: Int): T

/**
* Sets the array element at the specified [index] to the specified [value]. This method can
* be called using the index operator.
* ```
* arr[index] = value
* ```
*
* If the [index] is out of bounds of this array, throws an [IndexOutOfBoundsException] except in Kotlin/JS
* where the behavior is unspecified.
*/
public operator fun set(index: Int, value: T): Unit

/**
* Returns the number of elements in the array.
*/
public val size: Int

/**
* Creates an iterator for iterating over the elements of the array.
*/
public operator fun iterator(): Iterator<T>
}
fun <T> Array<T>.average() : Float {

print("${T::class.java}") //Compilation Error

//return default value
return 0.0f
}
Cannot use 'T' as reified type parameter. Use a class instead.

Please continue reading at https://agrawalsuneet.github.io/blogs/reified-kotlin/

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