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3 commits

Author SHA1 Message Date
Bruno BELANYI ab8ecf8121 transaction: use proper 'ParseError' type 2022-08-23 14:05:03 +02:00
Bruno BELANYI ffd6a20a30 transaction: add CSV deserialization 
It is unfortunate that both [1] and [2] conspire to make this code way
worse than it could otherwise be with a saner (de)serialization format.

We both need to introduce `TransactionRecord` due to tagged enums not
being powerful enough in CSV, and make its `amount` field optional to
deal with the varying number of fields for each kind of transaction.

[1]: https://github.com/BurntSushi/rust-csv/issues/211
[2]: https://github.com/BurntSushi/rust-csv/issues/172
 2022-08-23 14:05:03 +02:00
Bruno BELANYI c7e64692e6 lib: add 'Transaction' variants 
Represent each enum variant with its own type to allow stronger typing
when processing only a singular type of transactions.
 2022-08-23 14:05:03 +02:00