do not apply substitutor twice (IDEA-101752)

2026-08-26 03:13:40 +07:00 · 2013-02-25 18:44:14 +01:00
parent b562064e02
commit 33a583584b
3 changed files with 33 additions and 1 deletions
@@ -0,0 +1,22 @@
+public interface Iso<T, R> {
+    T deply(R r);
+
+    default Iso<R, T> inverse() {
+        final Iso<T, R> z = this;
+        return new Iso<R, T>() {
+            @Override
+            public R deply(T t) {
+                throw null;
+            }
+        };
+    }
+
+   static <T, R> Iso<R, T> inverse(Iso<T, R> z) {
+        return new Iso<R, T>() {
+            @Override
+            public R deply(T t) {
+                throw null;
+            }
+        };
+    }
+}