erase() function should be fairly good

src/main.c

@@ -12,16 +12,17 @@
  * > at()	Returns an indexed element from a vector
  * > back()	Returns the last element of a vector
  * > begin()	Returns an iterator pointing to the beginning of a vector
- * > capacity()	Returns the number of elements that a vector's reserved memory
- * is able to store > front()	Returns the first element of a vector > end()
- * Returns an iterator pointing to the end of a vector > push_back()	Adds an
- * element to the end of a vector > size()	Returns the number of elements
- * in a vector
+ * > capacity()	Returns the number of elements that a vector's reserved memory is able to store
+ * > front()	Returns the first element of a vector
+ * > end() Returns an iterator pointing to the end of a vector
+ * > push_back()	Adds an element to the end of a vector
+ * > size()	Returns the number of elements in a vector
+ * > clear()	Removes all of the contents of a vector
+ * > empty()	Checks whether a vector is empty or not
  *
  * assign()	Fills a vector with multiple values
- * clear()	Removes all of the contents of a vector
  * data() Returns a pointer to the block of memory where a vector's elements are
- * stored empty()	Checks whether a vector is empty or not erase()	Removes
+ * stored  erase()	Removes
  * a number of elements from a vector insert()	Inserts a number of elements
  * into a vector max_size()	Returns the maximum number of elements that a
  * vector can have pop_back()	Removes the last element of a vector rbegin()
@@ -124,6 +125,19 @@ at(const Vec8_t* vec, const int idx)
 	return -1;
 }
 
+Vec8_t*
+erase(Vec8_t* vec, const int iter) {
+        /*
+         * Clear the value at iter to 0
+         * shift all the values in the vector over to the left one
+         * */
+        if(vec == nullptr) return nullptr;
+        if(vec->arr == nullptr) return nullptr;
+        vec->arr[iter] = 0;
+        memmove(&vec[iter], &vec[iter + 1], (vec->size * sizeof(char)) -1);
+        return vec;
+}
+
 void
 print_vec(const Vec8_t* vec)
 {
@@ -173,6 +187,15 @@ back(const Vec8_t* vec)
 	return -1;
 }
 
+int
+empty(const Vec8_t* vec) {
+
+        if(vec->size > 0) {
+                return 1;
+        }
+        return 0;
+}
+
 Vec8_t
 add_back(Vec8_t* vec, const char val)
 {
@@ -201,11 +224,11 @@ main()
 	vec = add_back(&vec, '6');
 	vec = add_back(&vec, '8');
 	vec = add_back(&vec, '6');
-        clear(&vec);
-        for(int i = 0; i < vec.size; i++) {
-                printf("%i\n", at(&vec, i));
-        }
-	// print_vec(&vec);
+        vec = *erase(&vec, begin(&vec) + 2);
+        // for(int i = 0; i < vec.size; i++) {
+        //         printf("%i\n", at(&vec, i));
+        // }
+	print_vec(&vec);
 	//        printf("%c", at(nullptr, 0));
 
 	delete(&vec);