I have a SimpleListProperty<T>, how can I do a when (t) { is T -> todo() } how to extract t...

# getting-started

[Jasin Colegrove]

I have a SimpleListProperty<T>, how can I do a when (t) { is T -> todo() }
how to extract the Type contained in the list property?

[Joffrey]

Where are you trying to write this when? Could you give a bit more context? How do you get the instance of SimpleListProperty<T> and what is t here?

In general, if this class itself doesn't give access to the class of T, you can't. It is erased, so at runtime all you see is SimpleListProperty, not SimpleListProperty<String>. However, depending on how/where you want to use this information, using reified types may enable you to still get the information.

[Jasin Colegrove]

fun <T: Entity<T>> createLog(
    filename: String,
    logType: LogType,
    entityList: SimpleListProperty<T>,
    projectNum: SimpleStringProperty,
    projectName: SimpleStringProperty

I pass it to the function, T is an Entity<T> from ktorm, they are database entires.

[Jasin Colegrove]

inside the function I want to know T so I call another function that will process the entries based upon the type of entry they are

[Jasin Colegrove]

actually I see what I can do now, I can just use logType. I'm dumb