feat: Function composition (#2954)

* feature: Implement Virtual Proxy pattern #2940 * feature: Implement Virtual Proxy pattern #2940 * feature: Implement Virtual Proxy pattern #2940 * feature: Implement Virtual Proxy pattern #2940 * feature: Implement Virtual Proxy pattern #2940 * feature: Implement Virtual Proxy pattern, tests added * feature: Implement Virtual Proxy pattern, tests added * feature: Implement Virtual Proxy pattern, tests added * feature: Implement Virtual Proxy pattern, tests added * feature: Implement Virtual Proxy pattern, tests added * feature: Implement function composition pattern #2897 * task: isolate virtual proxy pattern * task: isolate virtual proxy pattern * refactoring: readme.md
2026-05-14 14:58:39 +00:00 · 2024-06-01 05:26:46 +03:00
parent 68ef414e19
commit 684b2e219e
10 changed files with 495 additions and 0 deletions
@@ -0,0 +1,46 @@
+/*
+ * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
+ *
+ * The MIT License
+ * Copyright © 2014-2022 Ilkka Seppälä
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.iluwatar.function.composition;
+
+import java.util.function.Function;
+
+/**
+ * Class for composing functions using the Function Composition pattern.
+ * Provides a static method to compose two functions using the 'andThen' method.
+ */
+public class FunctionComposer {
+
+  /**
+   * Composes two functions where the output of the first function becomes
+   * the input of the second function.
+   *
+   * @param f1 the first function to apply
+   * @param f2 the second function to apply after the first
+   * @return a composed function that applies f1 and then f2
+   */
+  public static Function<Integer, Integer> composeFunctions(Function<Integer, Integer> f1, Function<Integer, Integer> f2) {
+    return f1.andThen(f2);
+  }
+}