Kotlin File

.gitignore

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+.idea
+out
+.gradle
+build

appendix_a_coroutines/Drum Machine/build.gradle

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+plugins {
+    id 'org.jetbrains.kotlin.jvm' version '1.3.10'
+}
+
+version '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.0.1'
+}
+
+compileKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+compileTestKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}

appendix_a_coroutines/Drum Machine/gradle.properties

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+kotlin.code.style=official

appendix_a_coroutines/Drum Machine/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.8-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

appendix_a_coroutines/Drum Machine/settings.gradle

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+rootProject.name = 'drummachine'
+

appendix_a_coroutines/Drum Machine/src/main/kotlin/Beats.kt

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+import java.io.File
+import javax.sound.sampled.AudioSystem
+
+import kotlinx.coroutines.*
+
+suspend fun playBeats(beats: String, file: String) {
+    val parts = beats.split("x")
+    var count = 0
+    for (part in parts) {
+        count += part.length + 1
+        if (part == "") {
+            playSound(file)
+        } else {
+            delay(100 * (part.length + 1L))
+            if (count < beats.length) {
+                playSound(file)
+            }
+        }
+    }
+}
+
+fun playSound(file: String) {
+    val clip = AudioSystem.getClip()
+    val audioInputStream = AudioSystem.getAudioInputStream(
+        File(
+            file
+        )
+    )
+    clip.open(audioInputStream)
+    clip.start()
+}
+
+suspend fun main() {
+    runBlocking {
+        launch { playBeats("x-x-x-x-x-x-", "toms.aiff") }
+        playBeats("x-----x-----", "crash_cymbal.aiff")
+    }
+}

chapter01/MyFirstApp/MyFirstApp.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>

chapter01/MyFirstApp/src/App.kt

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+fun main(args: Array<String>) {
+    println("Pow!")
+}

chapter02/PhraseOMatic/PhraseOMatic.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>

chapter02/PhraseOMatic/src/PhraseOMatic.kt

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+fun main(args: Array<String>){
+    val wordArray1 = arrayOf("24/7", "multi-tier", "B-to-B", "dynamic", "pervasive")
+    val wordArray2 = arrayOf("empowered", "leveraged", "aligned", "targeted")
+    val wordArray3 = arrayOf("process", "paradigm", "solution", "portal", "vision")
+
+    val arraySize1 = wordArray1.size
+    val arraySize2 = wordArray2.size
+    val arraySize3 = wordArray3.size
+
+    val rand1 = (Math.random() * arraySize1).toInt()
+    val rand2 = (Math.random() * arraySize2).toInt()
+    val rand3 = (Math.random() * arraySize3).toInt()
+
+    val phrase = "${wordArray1[rand1]} ${wordArray2[rand2]} ${wordArray3[rand3]}"
+    println(phrase)
+}