so, I got a `Vec3` class where I retrieve componen...

# announcements

[elect]

so, I got a Vec3 class where I retrieve components as

override var x: Float
        get() = array[ofs]
        set(value) = array.set(ofs, value)

Why from java getX() returns Float instead float?

[Andreas Sinz]

What type is array? Array<Float>?

[poohbar]

yeah for primitive floats you would have to use FloatArray

[elect]

FloatArray

[elect]

however Vec3 : Vec3t<Float>

[elect]

and

abstract class Vec3t<T : Number> {

    abstract var x: T

[Andreas Sinz]

then there is no way to use primitive types

[diesieben07]

No way to use them directly. The compiler will use them transparently when possible.

[elect]

how can I check if a simple code like

val a = Vec3()
    val b = a.x

is involving boxing?

[elect]

this is the corresponding bytecode

L2
    LINENUMBER 146 L2
    ALOAD 1
    INVOKEVIRTUAL glm_/vec3/Vec3.getX ()Ljava/lang/Float;
    INVOKEVIRTUAL java/lang/Float.floatValue ()F
    FSTORE 2
   L3

[elect]

@Andreas Sinz @diesieben07

[diesieben07]

You mean you want to be able to tell without looking at the bytecode?

[elect]

either way

[diesieben07]

Well, when looking at the bytecode you can see that java.lang.Float is being used, which is the boxed version

[elect]

if I inline .x the bytecode viewer crash

[elect]

how to check if it's boxed then?

[diesieben07]

You could use javap or other bytecode viewers

[diesieben07]

Or know that generics means erasure, which requires boxing