From 45bfe3f95e0c6287b0c6a6da488744718c8f43f9 Mon Sep 17 00:00:00 2001
From: Tyge Løvset <tylo@norceresearch.no>
Date: Fri, 25 Sep 2020 21:19:23 +0200
Subject: Added ex.

---
 examples/share_ptr2.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 examples/share_ptr2.c

diff --git a/examples/share_ptr2.c b/examples/share_ptr2.c
new file mode 100644
index 00000000..726a9bc0
--- /dev/null
+++ b/examples/share_ptr2.c
@@ -0,0 +1,43 @@
+#include <stc/csptr.h>
+#include <stc/cmap.h>
+#include <stc/cstr.h>
+#include <stdio.h>
+
+typedef struct { cstr_t name, last; } Person;
+
+Person* Person_make(Person* p, cstr_t name, cstr_t last) {
+    printf("make %s\n", name.str);
+    p->name = name, p->last = last;
+    return p;
+}
+Person* Person_from(Person* p, const char* name, const char* last) {
+    p->name = cstr(name), p->last = cstr(last);
+    return p;
+}
+void Person_del(Person* p) {
+    printf("del: %s\n", p->name.str);
+    c_del(cstr, &p->name, &p->last);
+}
+
+using_csptr(pe, Person, Person_del);
+using_cmap(pe, int, csptr_pe, csptr_pe_del);
+
+
+int main() {
+    cmap_pe map = cmap_pe_init();
+
+    puts("Emplace 10:");
+    // c_try_emplace: The last argument is completely ignored if key already exist in map, so no memory leak happens!
+    c_forrange (i, 20) { // When i>9, all key will exist, so value arg is not executed.
+        c_try_emplace(&map, cmap_pe, (i * 7) % 10,
+                            csptr_pe_make(Person_make(c_new(Person), cstr_from("Name %d", (i * 7) % 10),
+                                                                     cstr_from("Last %d", (i * 9) % 10))));
+    }
+    c_try_emplace(&map, cmap_pe, 11, csptr_pe_make(Person_from(c_new(Person), "Hello", "world!")));
+
+    c_foreach (i, cmap_pe, map)
+        printf(" %d: %s\n", i.val->first, i.val->second.get->name.str);
+
+    puts("Destroy map:");
+    cmap_pe_del(&map);
+}
\ No newline at end of file
-- 
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