I have some ugly code that I’d like to improve. My...

# getting-started

[Ellen Spertus]

I have some ugly code that I’d like to improve. My goal is to create an array results as long as the list neededPermissions where every element of results has the value PackageManager.PERMISSION_GRANTED except for a single element. Here’s my code:

val results = neededPermissions.map { PackageManager.PERMISSION_GRANTED }.toIntArray()
results[0] = PackageManager.PERMISSION_DENIED

I know how to do what I want in Scheme (with cons and cdr). What’s a nice way to do it in Kotlin?

[Shawn]

I might be completely misunderstanding your question but

val results = intArrayOf(PackageManager.PERMISSION_DENIED) + IntArray(neededPermissions.size - 1) { PackageManager.PERMISSION_GRANTED }

[Ellen Spertus]

Thanks, @Shawn. That answers my question. I also appreciate seeing how to use an approach lighter weight than map to create an array of constant values.

[karelpeeters]

Can you give an example of what you want?

[Ellen Spertus]

@karelpeeters: @Shawn’s code shows what I want.

[karelpeeters]

Well what's wrong with that code them? What do you need to be different?