혀가 길지 않은 개발자

fun main() { var multiIntArray: Array = Array(3) { Array(3) { i -> i * i } } for (intArray in multiIntArray) { for (int in intArray) { print("$int ") } println() } } fun main() { var multiIntArray: Array = Array(3) { Array(3) { i -> i * i } } for (intArray in multiIntArray) { for (int in intArray) { print("$int ") } println() } } fun main() { var multiIntArray: Array = Array(3) { arrayOf(1, 2, 3..

fun main() { var intArray: IntArray = IntArray(3) for (int in intArray) { // 초기화 안하면 자동으로 0 들어감 print("$int ") } } fun main() { var intArray: IntArray = IntArray(3) intArray[0] = 1 * 1 intArray[1] = 2 * 2 intArray[2] = 3 * 3 for (int in intArray) { print("$int ") } } fun main() { var intArray: IntArray = IntArray(3) intArray[0] = 1 * 1 intArray[1] = 2 * 2 intArray[2] = 3 * 3 intArray[3] = 4 * 4 ..

lateinit vs Delegates.notNull() MainActivity.kt package com.jwsoft.kotlinproject import androidx.appcompat.app.AppCompatActivity import android.os.Bundle class MainActivity : AppCompatActivity() { private lateinit var longValue: Long private lateinit var intValue: Int private lateinit var stringValue: String private lateinit var arrLong: ArrayList private lateinit var arrInt: ArrayList private l..

activity_main.xml MainActivity.kt package com.jwsoft.kotlinproject import android.content.Context import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.view.inputmethod.InputMethodManager import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { private lateinit var inputMethodManager: InputMethodManager override fun onCrea..

Student.kt package com.jwsoft.kotlinproject data class Student ( var name: String ) MainActivity.kt package com.jwsoft.kotlinproject import android.os.Bundle import android.util.Log import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { private var students: ArrayList = ArrayList() override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstan..