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LseExportRange

rustrade_data::exchange::lse::export

Struct LseExportRange 

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pub struct LseExportRange { /* private fields */ }
Expand description

The date range an export covers.

start is inclusive, end is exclusive, and both are dates rather than timestamps — the export endpoint is date-granular, and taking NaiveDate states that in the type instead of silently discarding a caller’s time-of-day.

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impl LseExportRange

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pub fn new(start: NaiveDate, end: NaiveDate) -> Result<Self, LseError>

Construct a range.

§Errors

Returns LseError::InvalidInput unless start < end. An empty or inverted range would produce a valid, empty artifact at the cost of one export.

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pub fn start(&self) -> NaiveDate

The inclusive first date.

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pub fn end(&self) -> NaiveDate

The exclusive last date.

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pub fn is_wholly_after(&self, today: NaiveDate) -> bool

Whether this range starts more than one day after today, and so is guaranteed to hold no data.

Separate from new, and pure, deliberately: “is this range in the future” depends on when the question is asked, so a constructor answering it would bake one reading of the clock into a value that outlives it — and would make the type untestable without one. submit_export asks it at the point the export is actually spent, which is the instant the answer matters.

§Why a whole day of slack

today is read in UTC while the caller may be thinking in local time, and the widest real offset is UTC+14 — so a caller’s “today” can legitimately be UTC’s tomorrow, and never more. Comparing against today + 1 therefore cannot reject a range someone meant, while still catching the failure this exists for: a fat-fingered year, which misses by hundreds of days.

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impl Clone for LseExportRange

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for LseExportRange

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impl Debug for LseExportRange

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Eq for LseExportRange

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impl Hash for LseExportRange

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for LseExportRange

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for LseExportRange

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