A-M baby

Task/Mutual-recursion/D/mutual-recursion.d

@@ -0,0 +1,14 @@
+import std.stdio, std.algorithm, std.range;
+
+/*auto*/ int male(in int n) pure nothrow {
+    return n ? (n - female(male(n - 1))) : 0;
+}
+
+/*auto*/ int female(in int n) pure nothrow {
+    return n ? (n - male(female(n - 1))) : 1;
+}
+
+void main() {
+    iota(20).map!female().writeln();
+    iota(20).map!male().writeln();
+}