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CsvParser

Struct CsvParser 

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

CSV parser configuration and entry point.

use u_insight::csv_parser::CsvParser;

let csv = "a,b\n1,2\n3,4\n";
let df = CsvParser::new().parse_str(csv).unwrap();
assert_eq!(df.row_count(), 2);

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impl CsvParser

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pub fn new() -> Self

Creates a parser with default settings (comma delimiter, header row, standard null markers).

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pub fn delimiter(self, delim: u8) -> Self

Sets the field delimiter (default: comma).

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pub fn has_header(self, header: bool) -> Self

Sets whether the first row is a header (default: true).

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pub fn null_markers(self, markers: Vec<String>) -> Self

Sets custom null markers (replaces defaults).

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pub fn parse_str(&self, input: &str) -> Result<DataFrame, InsightError>

Parses a CSV string into a DataFrame.

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pub fn parse_file(&self, path: &str) -> Result<DataFrame, InsightError>

Parses a CSV file from disk into a DataFrame.

Trait Implementations§

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impl Clone for CsvParser

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fn clone(&self) -> CsvParser

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CsvParser

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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 Default for CsvParser

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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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
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.
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impl<V, T> VZip<V> for T
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fn vzip(self) -> V