IrishMike

Kotlin and Android Development featuring Jetpack: Treating method as a Property (Page 111)

Page 111 has:
fun playAITurn(
players: List,
currentPlayer: Player,
slots: List,
canPass: Boolean = false
): TurnResult? =
currentPlayer.selectedAI?.let { ai →
if (!canPass || ai.rollAgain(slots)) {
roll(players, currentPlayer, slots)
} else {
pass(players, currentPlayer)
}
}

Yet selectedAI() is defined in data class NewPlayer as follows:

fun selectedAI() = if (!isHuman.get()) {
    AI.basicAI.getOrNull(selectedAIPosition)
} else {
    null
}

Question: How can selectedAI() function be called using just selectedAI ??

Thank you
Mike (fairly new to Kotlin with little knowledge of Java)

2 comments

/book-kotlin-and-android-development-featuring-jetpack

0 604 2

2022-01-15 04:21:52 UTC

Marked As Solved

mfazio23

Author of Kotlin and Android Development featuring Jetpack

Hey Mike!
You’re correct that selectedAI() in NewPlayer is a function, but it’s a property inside Player, which is the class referenced in the playAITurn() function.

NewPlayer calculates the AI, Player takes that value to be used later.

Hope this helps!

Post #2

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Kotlin and Android Development featuring Jetpack: Treating method as a Property (Page 111)

IrishMike

Kotlin and Android Development featuring Jetpack: Treating method as a Property (Page 111)

Page 111 has:
fun playAITurn(
players: List,
currentPlayer: Player,
slots: List,
canPass: Boolean = false
): TurnResult? =
currentPlayer.selectedAI?.let { ai →
if (!canPass || ai.rollAgain(slots)) {
roll(players, currentPlayer, slots)
} else {
pass(players, currentPlayer)
}
}

Marked As Solved

mfazio23

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Kotlin and Android Development featuring Jetpack: Treating method as a Property (Page 111)

IrishMike

Kotlin and Android Development featuring Jetpack: Treating method as a Property (Page 111)

Page 111 has: fun playAITurn( players: List, currentPlayer: Player, slots: List, canPass: Boolean = false ): TurnResult? = currentPlayer.selectedAI?.let { ai → if (!canPass || ai.rollAgain(slots)) { roll(players, currentPlayer, slots) } else { pass(players, currentPlayer) } }

Marked As Solved

mfazio23

Where Next?

Popular Pragmatic Bookshelf topics

Distributed Services With Go - Ch 3 index errors on Config

Web Development with Clojure, Third Edition: (create-migration "guestbook") not working (page 9)

Distributed Services with Go: Chapter 1 Suggestions

Modern Front-End Development for Rails: B7 no main folder in the source code (page xv)

Modern Front-End Development for Rails: Can't get TURBO_STREAM format in some cases

Modern CSS with Tailwind: setting up Rails app

The Ray Tracer Challenge: cannot pass scaling test (page 69-70)

Agile Web Development with Rails 7: page 113 - Seeing the list of products

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Agile Web Development with Rails 7: page 152, page 153:

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We ❤️ helpful members!

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Devtalk Sponsors

We're in Beta

Page 111 has:
fun playAITurn(
players: List,
currentPlayer: Player,
slots: List,
canPass: Boolean = false
): TurnResult? =
currentPlayer.selectedAI?.let { ai →
if (!canPass || ai.rollAgain(slots)) {
roll(players, currentPlayer, slots)
} else {
pass(players, currentPlayer)
}
}