Merge branch 'stclib:master' into modifiedHEADmodified

1 files changed, 52 insertions, 0 deletions

diff --git a/misc/examples/smartpointers/arcvec_erase.c b/misc/examples/smartpointers/arcvec_erase.c
new file mode 100644
index 00000000..0526b6a0
--- /dev/null
+++ b/misc/examples/smartpointers/arcvec_erase.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+
+void show_drop(int* x) { printf("drop: %d\n", *x); }
+
+#define i_type Arc
+#define i_key int
+#define i_keydrop show_drop
+#define i_use_cmp           // enable sort/search for int type
+#include <stc/carc.h>       // Shared pointer to int
+
+#define i_type Vec
+#define i_keyboxed Arc
+#define i_use_cmp
+#include <stc/cvec.h>       // Vec: cvec<Arc>
+
+
+int main(void)
+{
+    Vec vec = c_init(Vec, {2012, 1990, 2012, 2019, 2015});
+    
+    // clone the second 2012 and push it back.
+    // note: cloning make sure that vec.data[2] has ref count 2.
+    Vec_push(&vec, Arc_clone(vec.data[2]));  // => share vec.data[2]
+    Vec_emplace(&vec, *vec.data[2].get);     // => deep-copy vec.data[2]
+    
+    printf("vec before erase :");
+    c_foreach (i, Vec, vec)
+        printf(" %d", *i.ref->get);
+
+    printf("\nerase vec.data[2]; or first matching value depending on compare.\n");
+    Vec_iter it;
+    it = Vec_find(&vec, *vec.data[2].get);
+    if (it.ref)
+        Vec_erase_at(&vec, it);
+
+    int year = 2015;
+    it = Vec_find(&vec, year); // Ok as tmp only.
+    if (it.ref)
+        Vec_erase_at(&vec, it);
+
+    printf("vec after erase  :");
+    c_foreach (i, Vec, vec)
+        printf(" %d", *i.ref->get);
+
+    Vec_sort(&vec);
+    printf("\nvec after sort   :");
+    c_foreach (i, Vec, vec)
+        printf(" %d", *i.ref->get);
+    
+    puts("\nDone");
+    Vec_drop(&vec);
+}