2 unstable releases
0.2.0 | Dec 12, 2019 |
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0.1.0 | Nov 19, 2019 |
#14 in #payments
21KB
343 lines
Debtsolver
Track and settle debts between parties with the fewest transactions.
Example
use debtsolver::Ledger;
use debtsolver::Transaction;
use debtsolver::transaction;
fn main() {
let mut ledger = Ledger::new();
// Let's say that:
// Alice paid 20 for Bob's lunch
// Bob paid 20 for Charlie's dinner the next day.
ledger.add_transaction(transaction!("Alice", "Bob", (20, "USD")));
ledger.add_transaction(transaction!("Bob", "Charlie", (20, "USD")));
for payment in ledger.settle() {
println!("{}", payment)
}
// Debtsolver will resolve this with one payment:
// Alice owes Charlie 20.00 USD
// Now lets say that:
// Bob paid for Alice's breakfast (20).
// Charlie paid for Bob's lunch (50).
// Alice paid for Charlie's dinner (35).
ledger.add_transaction(transaction!("Alice", "Bob", (20, "USD")));
ledger.add_transaction(transaction!("Bob", "Charlie", (50, "USD")));
ledger.add_transaction(transaction!("Charlie", "Alice", (35, "USD")));
for payment in ledger.settle() {
println!("{}", payment)
}
// Debtsolver will resolve this with just two payments:
// Bob owes Alice 15.00 USD
// Bob owes Charlie 15.00 USD
}
Dependencies
~1.5MB
~32K SLoC