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TypedCsvReader

Struct TypedCsvReader 

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

A CSV reader that exposes per-column typed access after type inference.

§Example

use oxiphysics_io::csv::TypedCsvReader;

let data = "id,x,active\n1,3.14,true\n2,2.71,false\n";
let reader = TypedCsvReader::from_str(data).unwrap();
let ids = reader.column_as_i64("id").unwrap();
assert_eq!(ids, vec![1, 2]);
let xs = reader.column_as_f64("x").unwrap();
assert!((xs[0] - 3.14).abs() < 1e-10);
let active = reader.column_as_bool("active").unwrap();
assert_eq!(active, vec![true, false]);

Implementations§

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impl TypedCsvReader

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pub fn from_str(data: &str) -> Result<Self, Error>

Parse a CSV string with the default comma delimiter.

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pub fn with_delimiter(data: &str, delimiter: char) -> Result<Self, Error>

Parse a CSV string with a custom delimiter.

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pub fn column_type(&self, name: &str) -> Result<ColumnType, Error>

Return the inferred type of a named column.

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pub fn column_as_i64(&self, name: &str) -> Result<Vec<i64>, Error>

Return a named column parsed as i64.

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pub fn column_as_f64(&self, name: &str) -> Result<Vec<f64>, Error>

Return a named column parsed as f64.

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pub fn column_as_bool(&self, name: &str) -> Result<Vec<bool>, Error>

Return a named column parsed as bool.

Accepts “true”/“1”/“yes” → true; “false”/“0”/“no” → false.

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pub fn table(&self) -> &CsvTable

Return the underlying table reference.

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pub fn headers(&self) -> &[String]

Return the column headers.

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pub fn row_count(&self) -> usize

Number of data rows.

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

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fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.