Struct ResetStep 

struct ResetStep {
    market: MarketContext,
    diff: MarketDiff,
    npv_before: f64,
    value: f64,
}

The reset step. A market that lacks a print the book has accrued refuses to value, so the step does not start from before as given: it starts from before with each new print standing at the forecast it replaced — the value the book carried while the print was projected, and before’s own value to round-off where it prices without the print — and ends at before with every print published. diff is the move from there to after, whose layouts now agree. None when after publishes nothing new.

Fields

market: MarketContext

diff: MarketDiff

npv_before: f64

The book’s value at the seeded start.

value: f64

The book’s value with every print published.