init repo.

.gitignore

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+.*
+*.iml
+/captures
+/local.properties
+
+build/

OWNERS

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+teams:
+- Core Android <core-android@yelp.com>

app.gradle

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+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 27
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 27
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+        }
+    }
+
+}
+
+
+dependencies {
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation"org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation "io.reactivex.rxjava2:rxjava:2.1.13"
+    implementation "com.google.guava:guava:25.0-android"
+
+    testImplementation 'junit:junit:4.12'
+    testImplementation 'org.mockito:mockito-inline:2.18.3'
+
+    androidTestImplementation 'org.mockito:mockito-android:2.18.3'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}

app/build.gradle

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+apply from:'../app.gradle'
+
+android {
+    defaultConfig {
+        applicationId "demo.my.myapplication"
+    }
+}

app/constructors.kts

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+open class Parent(arg: Unit = println("Parent primary default argument")) {
+    private val a = println("Parent.a")
+
+    init {
+        println("Parent.init")
+    }
+
+    constructor(arg: Int, arg2: Unit = println("Parent secondary default argument")) : this() {
+        println("Parent secondary constructor")
+    }
+
+    private val b = println("Parent.b")
+}
+
+class Child(arg: Unit = println("Child primary default argument")) : Parent(2) {
+    val a = println("Child.a")
+
+    init {
+        println("Child.init 1")
+    }
+
+    val b = println("Child.b")
+
+    constructor(arg: Int, arg2: Unit = println("Child secondary default argument")) : this() {
+        println("Child secondary constructor")
+    }
+
+    init {
+        println("Child.init 2")
+    }
+}
+
+Child(2)

app/delegates.kts

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+open class BackedByMap {
+    protected val _map = mutableMapOf<String, Any?>()
+    val map get() = _map.filterValues { it != null }
+}
+
+class Foo : BackedByMap() {
+    var foo: String? by _map
+    var bar: Int? by _map
+}
+
+val f = Foo()
+println(f.map)
+f.foo = "moo"
+f.bar = 5
+println(f.map)
+f.foo = null
+println(f.map)
+f.bar = null
+println(f.map)