ruwanka

fun main(args: Array<String>) {
    // lambda
    println(apply(5, { it * it }))
    // anonymous function
    println(apply(5, fun(n: Int): Int { return n * n}))
}

fun apply(num: Int, op: (Int) -> Int): Int {
    return op(num)
}

ruwanka

class Address(var street: String?, var City: String)

class User(var name: String, var address: Address?)

fun main(args: Array<String>) {
    
    var address = Address(null, "Colombo")
    var user = User("Dharmapala", address)
    
    println(user.address?.street?.toUpperCase())

ruwanka

fun String.toSentenceCase(): String = this.substring(0, 1).toUpperCase().plus(this.substring(1))

ruwanka

fun main(args: Array<String>) {
    println(2 powerTo 4)
}

infix fun Int.powerTo(to: Int): Double {
    return Math.pow(this.toDouble(), to.toDouble());
}

ruwanka

fun main(args: Array<String>) {
    println("this is cool".toSentenceCase())
}

fun String.toSentenceCase(): String {
    return this.substring(0, 1).toUpperCase().plus(this.substring(1))
}

ruwanka

import java.io.File
import com.ruwanka.io.File as MyFile

fun main(args: Array<String>) {

    var myFile: MyFile = MyFile()
    var javaFile: File = File("test.txt");

}

ruwanka

package com.ruwanka.io;

public class Program {

    public static void main(String[] args) {
        File myFile = new File();
        java.io.File javaFile = new java.io.File("test.txt");
    }

}

ruwanka

package com.ruwanka.io;

public class File {
}

ruwanka

data class Student(var name: String, var age: Int, val gender: String)

ruwanka

package com.ruwanka.realmdbinspect;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

import com.ruwanka.realmdbinspect.model.Address;
import com.ruwanka.realmdbinspect.model.Person;

import io.realm.Realm;