How to `MutableList<String>` -> `Array&lt...

# announcements

[ValV]

How to MutableList<String> -> Array<String>?

[Dias]

toTypedArray

[ValV]

Just interesting, why this function was not called simply toArray... ?

[Dias]

I would assume to avoid confusion with jvm primitive arrays like DoubleArray

[diesieben07]

Collection has toArray on the JVM which does something different

[diesieben07]

that's probably the reason

[Dias]

ah that would make sense too

[ValV]

But in Java's source code it was exactly toArray in the place where toTypedArray in Kotlin works. I'm confused

[karelpeeters]

They're pretty much equivalent except for the syntax: toTypedArray works using reified generics and for toArray you need to create and pass the array yourself or live with an Array<Any>.

[ValV]

Ah, indeed, there was a call to .toArray(new String[0])

[gildor]

I believe that the main reason is to be explicit about typed and primitive arrays extensions:

val a = listOf(1)
a.toIntArray() // IntArray, extension only for List<Int>
a.toTypedArray() // ArrayInt, extension for List<T>

Collection’s toArray is not a problem, because List is not implementing Java Collection in source code (but does on bytecode), so there is no name conflict