Port the examples to rename _get_at to _safe_get

example/ex-grep01.c

@@ -34,7 +34,7 @@ int main(int argc, const char *argv[])
       // While it reads some word from the file
       while (string_fget_word(word, " \t\n\r\"(),=", f)) {
          // Get the reference to the array of this word in the dictionnary (or create it if needed)
-         array_size_t *array = map_pos_get_at(positions, word);
+         array_size_t *array = map_pos_safe_get(positions, word);
          // Push the new offset to this word in the associated array
          array_size_push_back(*array, (size_t)ftell(f) - string_size(word));
       }

example/ex-multi01.c

@@ -48,8 +48,8 @@ static void program_init(program_t p, string_t text) {
         int left;
         array_int_pop_back(&left, leftstack);
         int right = pc;
-        *array_int_get_at (p->bracket_map, left) = right;
-        *array_int_get_at (p->bracket_map, right) = left;
+        *array_int_safe_get (p->bracket_map, left) = right;
+        *array_int_safe_get (p->bracket_map, right) = left;
       }
 
     pc++;

example/ex-string03.c

@@ -28,7 +28,7 @@ int main(void)
         M_LET(map, dict_str_t) {
             // Count the words:
             for M_EACH(w, words, vector_str_t) {
-                (*dict_str_get_at(map, *w)) ++;
+                (*dict_str_safe_get(map, *w)) ++;
             }
 
             // Print the count: