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Author SHA1 Message Date
Bruno BELANYI 963748e1d9 core: define 'TxAmount::ZERO' 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
Bruno BELANYI eae54b8ce0 lib: add core type definitions 2022-08-23 14:05:03 +02:00
Bruno BELANYI 1ea0505098 cargo: move 'processor' to 'bin' directory 
I like to keep executables in their own folders, and the as much of the
business logic in a library at the root.
 2022-08-22 17:49:06 +02:00
Bruno BELANYI c17a70bb39 cargo: add 'fpdec' dependency 
Instead of implementing custom fixed-point decimal numbers, let's make
use of an existing implementation until it is deemed inappropriate.
 2022-08-22 17:25:18 +02:00
Bruno BELANYI aedc20526a git: ignore generated files 2022-08-22 17:11:53 +02:00
Bruno BELANYI aae81e0e91 nix: add direnv integration 2022-08-22 17:11:53 +02:00
Bruno BELANYI e53634976c nix: init flake environment 2022-08-22 17:11:53 +02:00
Bruno BELANYI 7797f40d2e cargo: init build system 2022-08-22 17:11:53 +02:00