1 files changed, 43 insertions, 0 deletions
diff --git a/doc/generator.cpp b/doc/generator.cpp
new file mode 100644
index 0000000..6c64f80
--- /dev/null
+++ b/doc/generator.cpp
@@ -0,0 +1,43 @@
+/*
+ * sample.
+ *
+ * Something more or less like Python generators.
+ */
+#include <cstdlib>
+#include <cstdio>
+template<class base> class fi /* filler_iterator */ {
+        private:
+        base &parent;
+        public:
+        fi(base &p) : parent(p) {};
+        bool operator!=(const fi &) { return parent.has_more(); };
+        const fi &operator++(void) { return *this; };
+        int operator*(void) { return parent.yield(); };
+};
+
+class rdgen {
+        private:
+        unsigned int remaining;
+
+        public:
+        rdgen(unsigned int x) {
+                remaining = x;
+        };
+        bool has_more(void) {
+                return remaining > 0;
+        };
+        int yield(void) {
+                --remaining;
+                return rand();
+        };
+
+        fi<rdgen> begin(void) { return fi<rdgen>(*this); };
+        fi<rdgen> end(void) { return fi<rdgen>(*this); };
+};
+
+int main(int argc, const char **argv)
+{
+        for (auto x : rdgen(argc))
+                printf("%d\n", x);
+        return 0;
+}