When a contract saves a list of complex items, how are those items put into the contract's storage memory, one after another?

When a contract stores a list of complex items, these items are placed into the contract's persistent storage, which is part of the blockchain state. This storage differs from transient memory used during function execution. Complex items typically refer to custom data structures, most commonly Solidity structs, which group multiple related variables together. A list of such items is usually managed using a dynamic array of these structs. For a dynamic array of structs, the contract's storage operates in a specific way. First, the declaration slot of the dynamic array state variable itself holds only its current length. The actual data elements of the array, the complex items, do not start at this declaration slot. Instead, the base storage location f....