목록kotlin elvis (1)
Foggy day
Kotlin - Elvis, null check
Elvis of Kotlin is equal Optional.getOrElse() of java. you can set the default value of variable by using { ?: } class KotlinPlayGroundActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_kotlin_play_ground) var str: String? = null var strValueFirst = str ?: "It is null" println("strValueFirst : ..
Kotlin
2021. 3. 17. 23:30