Sorting Collections simplified

jesperancinha · Jan 16, 2024 · 884cf51 · 884cf51
1 parent fcd8548
commit 884cf51
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Showing 4 changed files with 51 additions and 2 deletions.
diff --git a/jeorg-kotlin-crums/jeorg-kotlin-crums-4-variance/pom.xml b/jeorg-kotlin-crums/jeorg-kotlin-crums-4-variance/pom.xml
@@ -103,7 +103,7 @@
                 <configuration>
                     <experimentalCoroutines>enable</experimentalCoroutines>
                     <jvmTarget>${java.version}</jvmTarget>
-                    <languageVersion>1.8</languageVersion>
+                    <languageVersion>1.9</languageVersion>
                 </configuration>
                 <executions>
                     <execution>
@@ -146,6 +146,34 @@
                 <artifactId>omni-coveragereporter-maven-plugin</artifactId>
                 <version>${omni-coveragereporter-maven-plugin.version}</version>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>default-compile</id>
+                        <phase>none</phase>
+                    </execution>
+                    <execution>
+                        <id>default-testCompile</id>
+                        <phase>none</phase>
+                    </execution>
+                    <execution>
+                        <id>compile</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>testCompile</id>
+                        <phase>test-compile</phase>
+                        <goals>
+                            <goal>testCompile</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 </project>
diff --git a/...rg-kotlin-crums-4-variance/src/main/kotlin/org/jesperancinha/ktd/CollectingCollections.kt b/...rg-kotlin-crums-4-variance/src/main/kotlin/org/jesperancinha/ktd/CollectingCollections.kt
@@ -0,0 +1,20 @@
+package org.jesperancinha.ktd
+
+import java.util.Collections.sort
+
+class CollectingCollections {
+    companion object {
+        @JvmStatic
+        fun main(args: Array<String> = emptyArray()) {
+            val mHullList = listOf(SquareFromZeroPoint(4, 2), SquareFromZeroPoint(2, 2))
+            sort(mHullList) { lhs, rhs ->
+                lhs.area().compareTo(rhs.area())
+            }
+            println(mHullList)
+        }
+    }
+}
+
+private fun SquareFromZeroPoint.area(): Double = (x * x + y + y).toDouble()
+
+data class SquareFromZeroPoint(val x: Long, val y: Long)
diff --git a/...-kotlin-crums/jeorg-kotlin-crums-4-variance/src/main/kotlin/org/jesperancinha/ktd/Main.kt b/...-kotlin-crums/jeorg-kotlin-crums-4-variance/src/main/kotlin/org/jesperancinha/ktd/Main.kt
@@ -19,6 +19,7 @@ class Main {
             Account.main(emptyArray())
             IndexSolutionForRIDHashes.main()
             Timeouts.main()
+            CollectingCollections.main()
         }
     }
 }
diff --git a/...ums/jeorg-kotlin-crums-4-variance/src/test/kotlin/org/jesperancinha/ktd/AtmMachineTest.kt b/...ums/jeorg-kotlin-crums-4-variance/src/test/kotlin/org/jesperancinha/ktd/AtmMachineTest.kt
@@ -3,7 +3,7 @@ package org.jesperancinha.ktd
 import kotlin.test.Test
 
 class AtmMachineTest {
-    val oldAtmMachine by lazy { OldAtmMachine() }
+    private val oldAtmMachine by lazy { OldAtmMachine() }
 
     @Test
     fun `should show compatibilities`() {