Thanks for the help

My money is on simple closure DSL stuff, not infix

Then again, hard to say without any context

I'll read that up too

the important part is:

case x :: xs => println(x + " " + xs)

Do the

xor

,

and

and

or

methods change the caller or do they return a new object?

The binary infix ones? They return a new value.

You can't even change primitives, they're immutable.

Cheers.

Hi, For an abstract JAVA class

BaseActivity

having abstract method

initToolbarAndProgressBar()

, how can I implement this method in the child KOTLIN class ?

you just override it

as you would in java

all java methods are implicitly open for kotlin?

naturally, you need to make the child extend the abstract class with

class Child : BaseActivity

yes i did that. Thanks. Would like to know if there is any way by which Java class method can be made non-open for kotlin child class

an abstract method is always visible to child classes

for a non-abstract method

the

private

modifier works in this scenario

kotlin won't change java modifiers

got it. Thanks!

Why

private

? If you do not want a method to be overridden,

final

is the modifier you want in Java.

true, I assumed he didn't want the child to know about the method, for which

private

is the right approach. But you're right, if we're talking exclusively about overriding something

final

is the way to go

i'm trying to use

obj.apply{}

on a java-object, but it seems doing

obj.apply{ name = "Alice" }

only works if there is a

setName

and a

getName

.. why is that?

Kotlin only maps pairs of methods to vars. Otherwise a number of features would break, e.g.

name += "!"

dammit, makes sense

i don't want any getters, but i do like the apply syntax 🤔

Why won’t you use

obj.apply { setName("Alice") }

then?

that's not as nice

😄

if you control that Java class, use may be

name(String s)

instead of

setName

?