Kotlin doesn t use `void` or `Void` it uses `Unit` You want

Question

Kotlin doesn t use `void` or `Void` it uses `Unit` You want `logic g Graphics gt Unit`

jamie-purchase · Answer

ah ok and just ignore the return content and don t worry about what Unit might be then

jamie-purchase · Answer

cheers

Shawn · Answer

I m not sure what you mean by ignore the return content If you type the lambda as returning `Unit` it can t return anything

Shawn · Answer

if it returns `null` then that s not returning `Unit`

jamie-purchase · Answer

it s ok i m new to Kotlin and wasn t familiar with what `Unit` is i ve caught up now gt This type corresponds to the void type in Java <https kotlinlang org api latest jvm stdlib kotlin unit index html>

kevinmost · Answer

`Unit` is a Kotlin object so it s a singleton and only one exists Kotlin implicitly does `return Unit` similar to how Java does for `void`

kevinmost · Answer

Right important distinction is that `null` is not of the type `Unit` `Unit` is a non nullable type so `null` does not fit in there

jamie-purchase · Answer

i ve abandoned my thoughts about null that was just a Java way of explaining my question and it s working fine with `Unit`

jamie-purchase · Answer

should have said function that returns void instead of null sorry

Shawn · Answer

no worries just a little confusing considering void functions can t return null either sweat smile

jamie-purchase · Answer

quite right I spend my days writing web applications in ColdFusion a language built on the JVM but without null support i m allowed to say the wrong thing occasionally when I spend my spare time using proper languages right wink

Shawn · Answer

oof that s a name I haven t heard in a long time haha

jamie-purchase · Answer

haha it s either what s that or is that still alive when you drop it

madorb · Answer

it had literally no idea coldfusion runs on the jvm

madorb · Answer

i guess though last time i knew someoe actively using it was 1999 and it wasn ton the JVM at that point smile

jamie-purchase · Answer

well i ve only been using version 10 and upwards released on May 15 2012 according to wikipedia it s cool being able to do things like `var buffer = createObject java java lang StringBuffer ` to dip into java classes and use them in cfml the language is still miserably behind most modern developments but thanks to the open source cfml engine and CLI and package management we are slowly getting there there is support for lambas but buggy static modifiers and generics are still nonexistent

jamie-purchase · Answer

you can load external JARs as well so it s entirely possible to utilise methods classes written in Scala Clojure Kotlin and pass them around like cf objects it s all JVM at the end of the day

jamie-purchase · Answer

but enough of that i m here to get away from CF haha < madorb>