1 files changed, 84 insertions, 0 deletions
diff --git a/misc/examples/csmap_erase.c b/misc/examples/csmap_erase.c
new file mode 100644
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+++ b/misc/examples/csmap_erase.c
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+// map_erase.c
+// From C++ example: https://docs.microsoft.com/en-us/cpp/standard-library/map-class?view=msvc-160#example-16
+#include <stc/cstr.h>
+#include <stdio.h>
+
+#define i_key int
+#define i_val_str
+#define i_type mymap
+#include <stc/csmap.h>
+
+void printmap(mymap m)
+{
+    c_foreach (elem, mymap, m)
+        printf(" [%d, %s]", elem.ref->first, cstr_str(&elem.ref->second));
+    printf("\nsize() == %" c_ZU "\n\n", mymap_size(&m));
+}
+
+int main()
+{
+    c_auto (mymap, m1)
+    {
+        // Fill in some data to test with, one at a time
+        mymap_insert(&m1, 1, cstr_lit("A"));
+        mymap_insert(&m1, 2, cstr_lit("B"));
+        mymap_insert(&m1, 3, cstr_lit("C"));
+        mymap_insert(&m1, 4, cstr_lit("D"));
+        mymap_insert(&m1, 5, cstr_lit("E"));
+
+        puts("Starting data of map m1 is:");
+        printmap(m1);
+        // The 1st member function removes an element at a given position
+        mymap_erase_at(&m1, mymap_advance(mymap_begin(&m1), 1));
+        puts("After the 2nd element is deleted, the map m1 is:");
+        printmap(m1);
+    }
+
+    c_auto (mymap, m2)
+    {
+        // Fill in some data to test with, one at a time
+        c_forlist (i, mymap_raw, {
+            {10, "Bob"},
+            {11, "Rob"},
+            {12, "Robert"},
+            {13, "Bert"},
+            {14, "Bobby"},
+        }) mymap_emplace(&m2, c_PAIR(i.ref));
+
+        puts("Starting data of map m2 is:");
+        printmap(m2);
+        mymap_iter it1 = mymap_advance(mymap_begin(&m2), 1);
+        mymap_iter it2 = mymap_find(&m2, mymap_back(&m2)->first);
+
+        puts("to remove:");
+        c_foreach (i, mymap, it1, it2)
+            printf(" [%d, %s]", i.ref->first, cstr_str(&i.ref->second));
+        puts("");
+        // The 2nd member function removes elements
+        // in the range [First, Last)
+        mymap_erase_range(&m2, it1, it2);
+        puts("After the middle elements are deleted, the map m2 is:");
+        printmap(m2);
+    }
+
+    c_auto (mymap, m3)
+    {
+        // Fill in some data to test with, one at a time, using emplace
+        mymap_emplace(&m3, 1, "red");
+        mymap_emplace(&m3, 2, "yellow");
+        mymap_emplace(&m3, 3, "blue");
+        mymap_emplace(&m3, 4, "green");
+        mymap_emplace(&m3, 5, "orange");
+        mymap_emplace(&m3, 6, "purple");
+        mymap_emplace(&m3, 7, "pink");
+
+        puts("Starting data of map m3 is:");
+        printmap(m3);
+        // The 3rd member function removes elements with a given Key
+        size_t count = mymap_erase(&m3, 2);
+        // The 3rd member function also returns the number of elements removed
+        printf("The number of elements removed from m3 is: %" c_ZU "\n", count);
+        puts("After the element with a key of 2 is deleted, the map m3 is:");
+        printmap(m3);
+    }
+}