<<SOLVED>> Hi everyone! I’m new to Kotlin and functional programming, coming from Java ...

# getting-started

[Nicolas Mariano Obregon]

<<SOLVED>>

Hi everyone! I’m new to Kotlin and functional programming, coming from Java OO.
Here’s my question:

If I want to define some interface method implementations using runCatching, something like this below, how should I define my interface method signature in order to return whatever the runCatching returns? I hope I was clear enough. Thanks in advanced

interface IMyInterface { 
    suspend fun myFunction()
}

class MyClass : IMyInterface {
    override suspend fun myFunction() = runCatching {

    }.onFailure { ... }.getOrThrow()
}

[Vampire]

Would you mind using three backticks for a block instead of one per line, then it is much more readable

[Nicolas Mariano Obregon]

yes! my bad

[Nicolas Mariano Obregon]

interface IMyInterface { 
    suspend fun myFunction()
}

class MyClass : IMyInterface {
    override suspend fun myFunction() = runCatching {
        ...
    }.onFailure { ... }.getOrThrow()
}

[Vampire]

And you can edit messages in Slack. 😄

[Vampire]

Regarding the actual question, well whatever you return inside the runCatching is the return type.

[Vampire]

Or did I get your question wrong?

[StavFX]

Your interface shouldn't care about whether or not the implementation will use runCatching. Just define the return type you normally would

[Nicolas Mariano Obregon]

thanks everyone, it was a PIBKAC issue, I didn’t write this part

}.onFailure { ... }.getOrThrow()

And the compiler was complaining, but after adding those, it worked fine. Thanks!