I'm declaring this extension functions in the same...

# getting-started

[tulio]

I'm declaring this extension functions in the same file as the data class, but I'm unable to use them in other classes

[agomez]

tulio: you need to import to be able to use them

[tulio]

I'm trying to use them on a Java class... Maybe that's the problem

[tulio]

Probably the compiler won't generate code to simulate extensions in java

[arocnies]

If I remember correctly, extension functions are compiled to static methods with the first param as the receiver.

[agomez]

besides you can use String::isNullOrEmpty

[agomez]

is a kotlin extension function on string instead of guava strings

[tulio]

Nice, I will take a look 🙂

[tulio]

I will declare this functions inside the data class for now

[alwyn]

other classes in same package?

[agomez]

to use it from java you need to call as static method defined in YourFileNameKt class

[tulio]

I understood Alejandro

[tulio]

@alwyn no

[alwyn]

maybe they're just not open?

[agomez]

being an instance of Task the first argument to that method

[agomez]

you can always inspect the bytecode inside idea to understand the generated code

[arocnies]

Funnily enough, the extensionFunction(receiver, params...) way of calling an extension function works in both Kotlin and Java

[agomez]

sure, if it works in java makes sense to work in kotlin