hi, can i defined a function which can be called like "diff{//do some}{// do some}" ?

either

diff({//do some},{// do some})

or

diff({//do some}){// do some}

thx, i choose diff{}(){}

That's not one of the options I gave, but if you really want that you can curry your function and do that, but I'd advise against it as it would come with some overhead.

The first syntax

foo {}{}

is actually possible, although it comes with some performance overhead and I would advice against it. The trick is that foo returns a function taking another lambda as it’s argument. https://pl.kotl.in/NFoCKXcuP

That does not compile.

wow after reloading the site it no longer does. I swear I just had it working.

where question mark will have to be replaced with your types

Are you sure, I can't seem to reproduce that. I'm pretty sure the max 1 lambda outside parentheses is an parser limitation.

I thought we could🧐

you could use infix functions, e.g.

infix fun <T> (() -> T).diff(other: () -> T) {}
    
    fun doIt() {
        { "this" } diff { "that" }
    }