A bit of reorg to get a java and kotlin package to match (for scope reasons), add a few blarps in the READMEs

coderdude1 · coderdude1 · commit d235ff57e3b7 · 2019-10-16T14:05:41.000-05:00
diff --git a/DEMO_TALKINGPOINTS.md b/DEMO_TALKINGPOINTS.md
@@ -0,0 +1,18 @@
+# Talking Points for meatspace demo
+
+#Kotlin Overview
+insert a quick TLDR of kotlin here
+* small list of key features (java integration, android/spring, different targets (jvm/native/js), succinct, etc)
+
+
+
+
+* stuff final by default (requires explicit open to allow subclassing)
+* immutable by design
+* null safe by default, requires explicit definition to allow something to be null
+
+# Basic Kotlin Overview
+[Intro To Kotlin Source](src/main/kotlin/me/kotlindemo/01_IntroToKotlin.kt)
+
+Update demos to include a few more things from here.  be concise, ie silly simple to keep it quick
+https://kotlinlang.org/docs/reference/idioms.html
diff --git a/README.md b/README.md
@@ -1,2 +1,29 @@
 # Kotlin Basics Demo
 This is a demo of very basic kotin stuff
+
+# Kotlin Overview
+Kotlin is a language created by Jetbrains (intellij geeks).  A few years ago as it really grew in popularity, a new group
+called the Kotlin Foundation was created to manage the language.  A bit after Google announced that kotlin was officially
+a supported first class language for Android development.  Spring announced around the same time that they added explicit
+support for kotlin in spring boot 2 and spring 5 for functional programming (and included amongst other things a new
+Kotlin DSL for it's endpoints).  Kotlin is released under the Apache 2 license
+
+Some interersting links
+* [Evolution of kotlin, including the philosophy of kotlin's goals](https://kotlinlang.org/docs/reference/evolution/kotlin-evolution.html)
+* [General FAQ](https://kotlinlang.org/docs/reference/faq.html)
+
+# Discussion Points
+## Some key points on kotlin vs java
+### Seamless Integration with java
+This was a design goal from the start.  This makes it very easy to start mixing kotlin and java, simply add the dependency to 
+gradle/maven.  A very common starting point for adding Kotlin to a project is replacing DTOs and Pojos, making them actually 
+readable (getter/setter/toString/equals/hashcode/copy are autogenerated, I will show this in a bit)
+
+### 
+
+#Sources
+Some places I got ideas of things to talk about
+* [Kotlin doc home, with very good guides](https://kotlinlang.org/docs)
+* [Article on key kotlin advantages over java](https://dzone.com/articles/what-are-the-biggest-advantages-of-kotlin-over-jav)
+* [Play with Kotlin online without installing the dev enviornment](https://play.kotlinlang.org)
+* [Kotlin Koans](https://www.jetbrains.com/help/education/learner-start-guide.html?section=Kotlin%20Koans)
diff --git a/src/main/java/me/kotlinintegration/JavaServiceThatDoesNothing.java b/src/main/java/me/kotlinintegration/JavaServiceThatDoesNothing.java
@@ -0,0 +1,5 @@
+package me.kotlinintegration;
+
+public class JavaServiceThatDoesNothing {
+
+}
diff --git a/src/main/java/me/kotlinintegration/UseAKotlinClass.java b/src/main/java/me/kotlinintegration/UseAKotlinClass.java
@@ -1,6 +1,6 @@
 package me.kotlinintegration;
 
-import me.kotlin.basic.basicstart.classes.Person;
+import me.kotlindemo.classes.Person;
 
 public class UseAKotlinClass {
     public static void main(String[] args) {
@@ -16,4 +16,9 @@ private void printADataClass() {
         System.out.println("  Kotlin dataclass Person toString after changing first name: " + person.toString());
         System.out.println("  Kotlin person explicit getter firstName: " + person.getFirstName());
     }
+
+    private void useAnExtensionFunction() {
+        String blah = "blah";
+        blah.doo
+    }
 }
diff --git a/src/main/kotlin/me/kotlindemo/01_IntroToKotlin.kt b/src/main/kotlin/me/kotlindemo/01_IntroToKotlin.kt
@@ -1,4 +1,4 @@
-package me.kotlin.basic.basicstart
+package me.kotlindemo
 
 import java.lang.NumberFormatException
 import kotlin.IllegalArgumentException
@@ -28,8 +28,12 @@ fun functions() {
     addAndPrint(14, 3)
     addAndPrintBody(17, 43) //cmd-click to show Unit is returned
     paramsWithDefaultValues() //use defaults
-    paramsWithDefaultValues("one", false, 14)//note four is using default, declard in order without names
-    paramsWithDefaultValues(two=false) //named params do not have to be in order
+    paramsWithDefaultValues(
+        "one",
+        false,
+        14
+    )//note four is using default, declard in order without names
+    paramsWithDefaultValues(two = false) //named params do not have to be in order
 }
 
 //functions are first class and do not need to be part of a class
@@ -102,7 +106,10 @@ fun whenWithSmartCast(a: Any) =
 fun conditionals() {
     println("\n>>>> Conditionals")
     println("  if as an expression, max value of 8 anc 2 is ${ifAsAnExpressionMaxValue(8, 2)}")
-    println("  if expression with blocks biggest of 13 and 53 is ${ifExpressionReturnsAValueWithBlocks(8, 2)}")
+    println("  if expression with blocks biggest of 13 and 53 is ${ifExpressionReturnsAValueWithBlocks(
+        8,
+        2
+    )}")
     println("  simple when as an expression ${simpleWhenAsExpression(2)}")
     println("  simple when as an expression out of range ${simpleWhenAsExpression(44)}")
     whenWithSmartCast("  smartCast with string 1")
@@ -124,7 +131,7 @@ fun progression() {
 }
 
 fun loops() {
-    println(">>>> Loops")
+    println("\n>>>> Loops")
     simpleForLoopOverRange()
     progression()
 }
diff --git a/src/main/kotlin/me/kotlindemo/02_Collections.kt b/src/main/kotlin/me/kotlindemo/02_Collections.kt
@@ -1,4 +1,4 @@
-package me.kotlin.basic.basicstart
+package me.kotlindemo
 
 fun main() {
     iterateCollection()
diff --git a/src/main/kotlin/me/kotlindemo/03_extensions.kt b/src/main/kotlin/me/kotlindemo/03_extensions.kt
@@ -1,4 +1,4 @@
-package me.kotlin.basic.basicstart
+package me.kotlindemo
 
 /**
  * https://kotlinlang.org/docs/reference/extensions.html
diff --git a/src/main/kotlin/me/kotlindemo/classes/Classes.kt b/src/main/kotlin/me/kotlindemo/classes/Classes.kt
@@ -1,4 +1,4 @@
-package me.kotlin.basic.basicstart.classes
+package me.kotlindemo.classes
 
 /**
  * Data classes are great for simple POJOs or DTOs, ie stuff that are simple data containers, not biz logic.  You
@@ -22,7 +22,8 @@ fun main() {
 fun showDataClass() {
     val one = Person("one", "fname", "lname")
     val two = Person("one", "fname", "lname", 31)
-    val three = Person(id = "one", firstName = "fname", lastName = "lname")//note use of named params
+    val three =
+        Person(id = "one", firstName = "fname", lastName = "lname")//note use of named params
     println("equals one and three: ${one.equals(two)}")
     println("toString: $one")
     println("field ${one.age}")
diff --git a/src/main/kotlin/me/kotlindemo/classes/KotlinFile.kt b/src/main/kotlin/me/kotlindemo/classes/KotlinFile.kt
@@ -1,4 +1,4 @@
-package me.kotlin.basic.basicstart.classes
+package me.kotlindemo.classes
 
 //note that this does not have to match the file path on disk
 
diff --git a/src/main/kotlin/me/kotlindemo/scopes/ScopeFunctions.kt b/src/main/kotlin/me/kotlindemo/scopes/ScopeFunctions.kt
@@ -1,4 +1,4 @@
-package me.kotlin.basic.basicstart.scopes
+package me.kotlindemo.scopes
 
 /**
  * Note that nothing is attached to a class.  properties and functions are first class objects, ie do not need to be part of

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +package me.kotlinintegration;
++
 +public class JavaServiceThatDoesNothing {
++
 +}
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-package me.kotlin.basic.basicstart`
	`1`	`+package me.kotlindemo`
`2`	`2`
`3`	`3`	`fun main() {`
`4`	`4`	`iterateCollection()`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-package me.kotlin.basic.basicstart.classes`
	`1`	`+package me.kotlindemo.classes`
`2`	`2`
`3`	`3`	`//note that this does not have to match the file path on disk`
`4`	`4`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-package me.kotlin.basic.basicstart.scopes`
	`1`	`+package me.kotlindemo.scopes`
`2`	`2`
`3`	`3`	`/**`
`4`	`4`	`* Note that nothing is attached to a class. properties and functions are first class objects, ie do not need to be part of`