1 files changed, 75 insertions, 0 deletions
diff --git a/examples/city.c b/examples/city.c
new file mode 100644
index 00000000..16c9b6f1
--- /dev/null
+++ b/examples/city.c
@@ -0,0 +1,75 @@
+#include <stc/cstr.h>
+
+typedef struct
+{
+    cstr name;
+    cstr country;
+    float lat, lon;
+    int population;
+} City;
+
+static inline int City_cmp(const City* a, const City* b) {
+    int c = cstr_cmp(&a->name, &b->name);
+    return c ? c : cstr_cmp(&a->country, &b->country);
+}
+
+static inline City City_clone(City c) {
+    c.name = cstr_clone(c.name);
+    c.country = cstr_clone(c.country);
+    return c;
+}
+
+static inline void City_drop(City* c) {
+    printf("drop %s\n", cstr_str(&c->name));
+    c_drop(cstr, &c->name, &c->country);
+}
+
+#define i_type CityArc
+#define i_val_bind City
+//#include <stc/cbox.h>
+#include <stc/carc.h>
+
+#define i_type Cities
+#define i_val_arcbox CityArc
+#include <stc/cvec.h>
+
+#define i_type CityMap
+#define i_key int
+#define i_val_arcbox CityArc
+#include <stc/csmap.h>
+
+
+int main(void)
+{
+    c_auto (Cities, cities, copy)
+    c_auto (CityMap, map)
+    {
+        struct City_s { const char *name, *country; float lat, lon; int pop; };
+
+        c_apply(c, Cities_push(&cities, CityArc_from((City){cstr_from(c.name), cstr_from(c.country),
+                                                            c.lat, c.lon, c.pop})), struct City_s, {
+            {"New York", "US", 4.3, 23.2, 9000000},
+            {"Paris", "France", 4.3, 23.2, 9000000},
+            {"Berlin", "Germany", 4.3, 23.2, 9000000},
+            {"London", "UK", 4.3, 23.2, 9000000},
+        });
+
+        copy = Cities_clone(cities); // share each element!
+
+        int k = 0, id[] = {8, 4, 3, 9, 2, 5};
+        c_foreach (i, Cities, cities)
+            CityMap_insert(&map, id[k++], CityArc_clone(*i.ref));
+
+        Cities_pop(&cities);
+        Cities_pop(&cities);
+
+        printf("Vec:\n");
+        c_foreach (c, Cities, cities)
+            printf("city:%s, %d, use:%ld\n", cstr_str(&c.ref->get->name), c.ref->get->population, CityArc_use_count(*c.ref));
+
+        printf("\nMap:\n");
+        c_forpair (id, city, CityMap, map)
+            printf("id:%d, city:%s, %d, use:%ld\n", _.id, cstr_str(&_.city.get->name), _.city.get->population, CityArc_use_count(_.city));
+        puts("");
+    }
+}