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CsvSource

Struct CsvSource 

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pub struct CsvSource<R> { /* private fields */ }
Expand description

A streaming CSV or TSV RowSource, from CsvReader::source. Every cell is Value::Str as written.

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impl<R: BufRead> CsvSource<R>

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pub fn dialect(&self) -> Dialect

The dialect in use.

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pub fn longer_rows(&self) -> usize

How many rows so far had more cells than there are columns (their extra cells are dropped).

Trait Implementations§

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impl<R: Debug> Debug for CsvSource<R>

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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<R: BufRead> RowSource for CsvSource<R>

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fn columns(&self) -> &[String]

The column names, in order.
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fn next_row(&mut self) -> Option<Result<Row, DataError>>

The next row, None at the end, or why it could not be read.
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fn schema(&self) -> Option<&Schema>

What the source knows about the columns’ types, if anything. A source’s schema has one field per column, in the same order.
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fn collect_rows(self) -> Result<Rows, DataError>
where Self: Sized,

Read every remaining row into memory.

Auto Trait Implementations§

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impl<R> Freeze for CsvSource<R>
where R: Freeze,

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impl<R> RefUnwindSafe for CsvSource<R>
where R: RefUnwindSafe,

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impl<R> Send for CsvSource<R>
where R: Send,

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impl<R> Sync for CsvSource<R>
where R: Sync,

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impl<R> Unpin for CsvSource<R>
where R: Unpin,

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impl<R> UnsafeUnpin for CsvSource<R>
where R: UnsafeUnpin,

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impl<R> UnwindSafe for CsvSource<R>
where R: UnwindSafe,

Blanket Implementations§

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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

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type Error = !

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

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.