What happens is that "mystring".toCharArray() returns a CharArray but I need an Array<Char>.
CharArray exists? what's the idea behind it?CharArray to Array<Char>?I found one way to make it Array<Char>
"mystring".toCharArray().map { it }.toTypedArray()
but is there any other way to do it?
For the first part of your question, refer to the "Basic types" section of the official language documentation:
Kotlin also has specialized classes to represent arrays of primitive types without boxing overhead: ByteArray, ShortArray, IntArray and so on. These classes have no inheritance relation to the Array class, but they have the same set of methods and properties. Each of them also has a corresponding factory function:
For the second part of your question, it seems you don't need the map. You can just do:
"mystring".toCharArray().toTypedArray()
Another way is mapping the CharSequence to it which will give you a List<Char> which then can be converted to the desired Array<Char>:
"mystring".map { it }.toTypedArray()
"hello".toList().toTypedArray()