(Aside: it would be nice if there was a slack plugin to transfer conversation into a new youtrack issue)

Done: https://youtrack.jetbrains.com/issue/KT-11175

we could write a bot

isolating that conversation would be tricky

I'd do that via browser extension

or even a userscript

is sealed class similar to case class in scala?

no, case class in kotlin is called a data class

well bit of both actually

I think it’s safe to say that there is no equivalent of

case class

in Kotlin

and that is not necessarily a bad thing 😉

What is Backing properties?

The case is best described in the m14 blogpost http://blog.jetbrains.com/kotlin/2015/10/kotlin-m14-is-out/

Hi there! simple smile

Is there method like toIntOrDefault?

“123”.toIntOrDefault(0) => 123

“”.toIntOrDefault(0) => 0

(perhaps, something on Integer.getInteger )

You could write an extension that does it. Something like…

fun String.intOrDefault(defaultValue : Int = 0) : Int {
    return this.toInt() ?: defaultValue
}

@evanchooly: Thought about our discussion and I think I know how to use default parameters with Guice, if you're ever interested in doing that

i definitely am

toInt()

is not nullable

@apptreematt: thanks! Didn’t know that toInt() can return null

@egslava: Actually, now that I look I don’t think it does

its going to throw

so you can just return the default value in your catch

@apptreematt: I don’t wanna catch exceptions simple smile We’re on Kotlin simple smile

if ( getInteger(text.toString(), 0) == 0) setText("0”)

Always returns 0 😞

@egslava: Just put it in your extension method:

fun String.intOrDefault(defaultValue : Int = 0) : Int {
    try {
        return this.toInt()    
    } catch ( e : Exception ) {
        return defaultValue   
    }
}

@evanchooly:

class Db @Inject constructor(val database: Database, @Assisted val tableName: String) {
    interface IFactory {
        fun create(tableName: String = "ACCOUNTS") : Db
    }
}

class A @Inject constructor(val dbFactory: Db.IFactory) {
    fun a() {
        val db1 = dbFactory.create()  // db for "ACCOUNTS"
        val db2 = dbFactory.create("USERS") // db for "USERS
    }
}

Basically using assisted injection and moving the default parameters in the interface.