Is it possible to hide fields from the `toString` ...

# announcements

[jeggy]

Is it possible to hide fields from the toString function on data classes? Can be with annotation or anything. I want to achieve something like this: https://pl.kotl.in/Ld0EBnHM1

[nanodeath]

just override it. that's what we do for a class that stores credentials.

[Javier]

https://github.com/aafanasev/sekret

[Vampire]

Or don't have it in the primary constructor, that would also leave it out from copy for example if that is what you want:

data class MyData private constructor(
	val value1: String,
    val value3: String
) {
    private lateinit var value2: String

    constructor(
	    value1: String,
        value2: String,
        value3: String
    ) : this(value1, value3) {
        this.value2 = value2
    }
}

[Nir]

this example makes me wonder why you are restricted to property parameters for dataclasses

[jeggy]

I'm trying to make a library. So I want the developer writing the data classes to have it as minimal as possible. This Sekret Library looks really interesting. :)

[Nir]

The example above seems like a more complex way of writing:

data class MyData constructor(
	val value1: String,
    value2: String,
    val value3: String
) {
    val value2 = value2
}

which Kotlin doesn't actually allow

[Nir]

not sure why Kotlin couldn't allow this

[nanodeath]

I think data classes have a lot of restrictions to keep them simple. like I wouldn't know what would be included in the copy/toString methods of that

[Nir]

How wouldn't you know? My example has nothing else that could possibly be part of copy

[Nir]

It adds an argument to the primary constructor, but no state

[nanodeath]

maybe I'm uniquely bad at reading constructors /s