1 files changed, 74 insertions, 0 deletions
diff --git a/misc/examples/csmap_find.c b/misc/examples/csmap_find.c
new file mode 100644
index 00000000..3c507476
--- /dev/null
+++ b/misc/examples/csmap_find.c
@@ -0,0 +1,74 @@
+// This implements the c++ std::map::find example at:
+// https://docs.microsoft.com/en-us/cpp/standard-library/map-class?view=msvc-160#example-17
+#include <stc/cstr.h>
+
+#define i_key int
+#define i_val_str
+#define i_tag istr
+#include <stc/csmap.h>
+
+#define i_val csmap_istr_raw
+#define i_opt c_no_cmp
+#define i_tag istr
+#include <stc/cvec.h>
+
+void print_elem(csmap_istr_raw p) {
+    printf("(%d, %s) ", p.first, p.second);
+}
+
+#define using_print_collection(CX) \
+    void print_collection_##CX(const CX* t) { \
+        printf("%" c_ZU " elements: ", CX##_size(t)); \
+    \
+        c_foreach (p, CX, *t) { \
+            print_elem(CX##_value_toraw(p.ref)); \
+        } \
+        puts(""); \
+    }
+
+using_print_collection(csmap_istr)
+using_print_collection(cvec_istr)
+
+void findit(csmap_istr c, csmap_istr_key val)
+{
+    printf("Trying find() on value %d\n", val);
+    csmap_istr_iter result = csmap_istr_find(&c, val); // prefer contains() or get()
+    if (result.ref != csmap_istr_end(&c).ref) {
+        printf("Element found: "); print_elem(csmap_istr_value_toraw(result.ref)); puts("");
+    } else {
+        puts("Element not found.");
+    }
+}
+
+int main()
+{
+    c_auto (csmap_istr, m1)
+    c_auto (cvec_istr, v)
+    {
+        c_forlist (i, csmap_istr_raw, {{40, "Zr"}, {45, "Rh"}})
+            csmap_istr_emplace(&m1, c_PAIR(i.ref));
+
+        puts("The starting map m1 is (key, value):");
+        print_collection_csmap_istr(&m1);
+
+        typedef cvec_istr_value pair;
+        cvec_istr_push(&v, (pair){43, "Tc"});
+        cvec_istr_push(&v, (pair){41, "Nb"});
+        cvec_istr_push(&v, (pair){46, "Pd"});
+        cvec_istr_push(&v, (pair){42, "Mo"});
+        cvec_istr_push(&v, (pair){44, "Ru"});
+        cvec_istr_push(&v, (pair){44, "Ru"}); // attempt a duplicate
+
+        puts("Inserting the following vector data into m1:");
+        print_collection_cvec_istr(&v);
+
+        c_foreach (i, cvec_istr, cvec_istr_begin(&v), cvec_istr_end(&v))
+            csmap_istr_emplace(&m1, c_PAIR(i.ref));
+
+        puts("The modified map m1 is (key, value):");
+        print_collection_csmap_istr(&m1);
+        puts("");
+        findit(m1, 45);
+        findit(m1, 6);
+    }
+}