Kotlin Programming: The Big Nerd Ranch Guide, 2nd Edition by David Greenhalgh & Josh Skeen

Author:David Greenhalgh & Josh Skeen [David Greenhalgh]
Language: eng
Format: epub, pdf
Publisher: Big Nerd Ranch Guides
Published: 2021-10-24T16:00:00+00:00

Run NyetHack and confirm that your new initialization logic is working as expected:

Welcome to NyetHack! A hero enters the town of Kronstadt. What is their name? Madrigal Madrigal of Neversummer, The Renowned Hero, heads to the town square ...

When you use lateinit, you tell the compiler, “I promise that I will set this variable before I use it.” As long as you initialize your lateinit variable before it is accessed, then there is no problem. To see what happens if you fail to hold up your end of the bargain, try to access player before assigning it.

Listing 14.11 Breaking promises with the compiler (NyetHack.kt)

lateinit var player: Player fun main() { narrate("Welcome to NyetHack, ${player.name}!") val playerName = promptHeroName() player = Player(playerName) ... } ...

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.