Merge pull request #1 from darshitpp/sync/upstream-update

Sync: Update patterns from java.evolved (2026-03-25)

Author: darshitpp

references/collections.md

@@ -59,7 +59,7 @@ List<String> copy =
 ### Why modern wins
 - **Smart copy:** Skips the copy if the source is already immutable.
 - **One call:** No manual ArrayList construction + wrapping.
-- **Defensive copy:** Changes to the original don't affect the copy.
+- **Any Collection:** Accepts any Collection as input—no intermediate ArrayList conversion needed.
 
 ### References
 - [List.copyOf()](https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/util/List.html#copyOf(java.util.Collection))
@@ -262,17 +262,20 @@ var reversed = list.reversed();
 
 ## Typed stream toArray
 - **Since:** Java 8
-- **Old approach:** Manual Array Copy (Pre-Streams)
+- **Old approach:** Manual Filter + Copy (Pre-Streams)
 - **Modern approach:** toArray(generator) (Java 8+)
-- **Summary:** Convert streams to typed arrays with a method reference.
+- **Summary:** Filter a collection and collect the results to a typed array using a single stream expression.
 
 ### Before
 ```java
 List<String> list = getNames();
-String[] arr = new String[list.size()];
-for (int i = 0; i < list.size(); i++) {
-    arr[i] = list.get(i);
+List<String> filtered = new ArrayList<>();
+for (String n : list) {
+    if (n.length() > 3) {
+        filtered.add(n);
+    }
 }
+String[] arr = filtered.toArray(new String[0]);
 ```
 
 ### After
@@ -285,7 +288,7 @@ String[] arr = getNames().stream()
 ### Why modern wins
 - **Type-safe:** No Object[] cast — the array type is correct.
 - **Chainable:** Works at the end of any stream pipeline.
-- **Concise:** One expression replaces the manual loop.
+- **Concise:** No intermediate list — one expression replaces the manual loop and copy.
 
 ### References
 - [Stream.toArray()](https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/util/stream/Stream.html#toArray(java.util.function.IntFunction))

references/detection-patterns.md

@@ -15,7 +15,7 @@ _Auto-generated from upstream YAML data. Do not edit manually._
 - **map-entry-factory** (Java 9+): Old=`SimpleEntry` | Detect: `SimpleEntry`
 - **reverse-list-iteration** (Java 21+): Old=`Manual ListIterator` | Detect: `System.out.println(`, `list.listIterator(list.size())`, `it.hasPrevious()`, `it.previous()`, `out.println(element)`
 - **sequenced-collections** (Java 21+): Old=`Index Arithmetic` | Detect: `list.get(list.size() - 1)`, `list.get(0)`
-- **stream-toarray-typed** (Java 8+): Old=`Manual Array Copy` | Detect: `list.size()`, `list.get(i)`
+- **stream-toarray-typed** (Java 8+): Old=`Manual Filter + Copy` | Detect: `new ArrayList(`, `n.length()`, `filtered.add(n)`
 - **unmodifiable-collectors** (Java 16+): Old=`collectingAndThen` | Detect: `Collectors.collectingAndThen(`, `Collectors.toList(`
 
 ## Concurrency

references/language.md

@@ -312,7 +312,8 @@ class Square extends Shape {
 
 ### Before
 ```java
-if (shape instanceof Circle c) {
+if (shape instanceof Circle) {
+    Circle c = (Circle) shape;
     if (c.radius() > 10) {
         return "large circle";
     } else {