eosio multi index clear

The eosio::multi_index::clear function in C++ is used to remove all the objects stored in a multi-index table in EOSIO. Here is an explanation of each step involved in using this function:

  1. Identify the multi-index table: First, you need to identify the multi-index table that you want to clear. The multi-index table is typically defined using the TABLE macro, which includes the table name and the structure of the table rows.

  2. Access the multi-index table: Once you have identified the multi-index table, you need to access it using the appropriate syntax. In EOSIO, you can access the multi-index table using the name or multi_index types.

  3. Call the clear function: After accessing the multi-index table, you can call the clear function on it. This function is a member function of the multi-index table and is used to remove all the objects stored in the table.

  4. Verify the clear operation: After calling the clear function, you can verify if all the objects in the multi-index table have been removed. You can do this by checking the size of the table or by iterating over the table and checking if there are no more objects present.

It's important to note that the clear function removes all the objects in the multi-index table, so use it with caution. Make sure you have a backup or a way to recover the data if needed.

I hope this explanation helps! Let me know if you have any further questions.