Function eosio_cdt_sys::db_get_i64

pub unsafe extern "C" fn db_get_i64(
    iterator: i32, 
    data: *const c_void, 
    len: u32
) -> i32

Get a record in a primary 64-bit integer index table

@brief Get a record in a primary 64-bit integer index table @param iterator - The iterator to the table row containing the record to retrieve @param data - Pointer to the buffer which will be filled with the retrieved record @param len - Size of the buffer @return size of the data copied into the buffer if len > 0, or size of the retrieved record if len == 0. @pre iterator points to an existing table row in the table @pre data is a valid pointer to a range of memory at least len bytes long @post data will be filled with the retrieved record (truncated to the first len bytes if necessary)

Example:

@code char value[50]; auto len = db_get_i64(itr, value, 0); eosio_assert(len <= 50, "buffer to small to store retrieved record"); db_get_i64(itr, value, len); @endcode