how do you make a property reference with that kotlinlang #announcements

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Title

03/13/2019, 3:05 AM

how do you make a property reference with that?

👆 2

sitepodmatt

03/13/2019, 3:06 AM

okay this is starting to sound familiar (although Im not sure I understood the answer in the early days)... can you elaborate

03/13/2019, 3:06 AM

foo.bar

a bound reference to the property

Foo.bar

on instance

foo

or an invocation of the getter of the

bar

property on the

foo

instance? The syntax is ambiguous.

gildor

03/13/2019, 3:07 AM

class Foo {
    val bar: String = ""
    fun bar() = ""
}

Foo().bar // ???

Of course in theory it was possible to restrict such naming, but it would bring a lot of problems with JVM interop

sitepodmatt

03/13/2019, 3:11 AM

great thanks. that makes sense and that answers that question! cheers guys

https://play.kotlinlang.org/#eyJ2ZXJzaW9uIjoiMS4zLjIxIiwicGxhdGZvcm0iOiJqYXZhIiwiYXJncyI6IiIsImpzQ29kZSI6IiIsIm5vbmVNYXJrZXJzIjp0cnVlLCJ0aGVtZSI6ImlkZWEiLCJmb2xkZWRCdXR0b24iOnRydWUsInJlYWRPbmx5IjpmYWxzZSwiY29kZSI6IlxuY2xhc3MgRm9vIHtcbiAgICB2YWwgYmFyOiBTdHJpbmcgPSBcIlwiXG4gICAgZnVuIGJhcigpIDogSW50ID0gMFxufVxuXG5mdW4gbWFpbigpIHtcbiAgIFx0XHRwcmludGxuKFwicnVubmluZ1wiKVxuICAgICAgICB2YWwgZiA9IEZvbygpXG4gICAgICAgIHZhbCB4IDogKCkgLT4gU3RyaW5nID0gZjo6YmFyXG4gICAgXHRwcmludGxuKHgoKSlcbiAgICBcdFxufSJ9

next, why isn't this caught at compile time?

gildor

03/13/2019, 3:12 AM

caught at compile time?

sitepodmatt

03/13/2019, 3:13 AM

ah nevermind

::fn will fallback to use the property if there is no fun fn

gildor

03/13/2019, 3:15 AM

Yes, reference to properties are also supported

but resolution may be ambiguous

sitepodmatt

03/13/2019, 3:17 AM

thanks, til ☝️ everything above 🙂

gildor

03/13/2019, 3:19 AM

For example you can do even this (but only if you don’t have ambiguous naming, like in my first sample): https://pl.kotl.in/ryapLxLPN

👍 1

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