deleting walls

kubo_dynarray.h

@@ -21,6 +21,7 @@
 
 #include <assert.h>
 #include <stdlib.h>
+#include <string.h>
 
 #define KUBO_DRYNARRAY_DEFAULT_CAP 4
 
@@ -80,6 +81,12 @@
     static inline void name##_clear(struct name *arr) {                        \
         free(arr->data);                                                       \
         name##_init(arr);                                                      \
+    }                                                                          \
+                                                                               \
+    static inline void name##_del(struct name *arr, size_t index) {            \
+        assert(index < arr->count);                                            \
+        memmove(arr->data + index, arr->data + index + 1,                      \
+                (--arr->count - index) * sizeof(struct name));                 \
     }
 
 #endif