Restructured folders: examples, benchmarks, tests into misc folder.

1 files changed, 68 insertions, 0 deletions

diff --git a/misc/examples/music_arc.c b/misc/examples/music_arc.c
new file mode 100644
index 00000000..162c4c2f
--- /dev/null
+++ b/misc/examples/music_arc.c
@@ -0,0 +1,68 @@
+// shared_ptr-examples.cpp
+// based on https://docs.microsoft.com/en-us/cpp/cpp/how-to-create-and-use-shared-ptr-instances?view=msvc-160
+#include <stc/cstr.h>
+
+struct Song
+{
+    cstr artist;
+    cstr title;
+} typedef Song;
+
+int Song_cmp(const Song* x, const Song* y)
+    { return cstr_cmp(&x->title, &y->title); }
+
+Song Song_from(const char* artist, const char* title)
+    { return (Song){cstr_from(artist), cstr_from(title)}; }
+
+void Song_drop(Song* s) {
+    printf("drop: %s\n", cstr_str(&s->title));
+    c_drop(cstr, &s->artist, &s->title);
+}
+
+// Define the reference counted type
+#define i_type SongArc
+#define i_valclass Song
+#define i_opt c_no_hash
+#include <stc/carc.h>
+
+// ... and a vector of it
+#define i_type SongVec
+#define i_valboxed SongArc
+#include <stc/cstack.h>
+
+void example3()
+{
+    c_auto (SongVec, vec1, vec2)
+    {
+        c_forlist (i, Song, {
+            Song_from("Bob Dylan", "The Times They Are A Changing"),
+            Song_from("Aretha Franklin", "Bridge Over Troubled Water"),
+            Song_from("Thalia", "Entre El Mar y Una Estrella")
+        }) SongVec_emplace(&vec1, *i.ref);
+
+        // Share all entries in vec with vec2, except Bob Dylan.
+        c_foreach (s, SongVec, vec1)
+            if (!cstr_equals(&s.ref->get->artist, "Bob Dylan"))
+                SongVec_push(&vec2, SongArc_clone(*s.ref));
+
+        // Add a few more to vec2. We can use emplace when creating new entries
+        SongVec_emplace(&vec2, Song_from("Michael Jackson", "Billie Jean"));
+        SongVec_emplace(&vec2, Song_from("Rihanna", "Stay"));
+        // If we use push, we would need to construct the Arc explicitly (as in c++, make_shared):
+        // SongVec_push(&vec2, SongArc_from(Song_from("Rihanna", "Stay")));
+
+        // We now have two vectors with some shared, some unique entries.
+        c_forlist (i, SongVec, {vec1, vec2}) {
+            puts("VEC:");
+            c_foreach (s, SongVec, *i.ref)
+                printf("  %s - %s, REFS: %ld\n", cstr_str(&s.ref->get->artist),
+                                                 cstr_str(&s.ref->get->title),
+                                                 *s.ref->use_count);
+        }
+    } // because the shared elem. are ref. counted, they are only dropped once here.
+}
+
+int main()
+{
+    example3();
+}