Enum QuoteStyle 

#[non_exhaustive]
pub enum QuoteStyle {
    Always,
    Necessary,
    NonNumeric,
    Never,
}

The quoting style to use when writing CSV files.

This type is re-exported from the csv crate and supports different strategies for quoting fields. It is compatible with Apache Spark’s CSV options like quoteAll.

Example

use arrow_csv::{WriterBuilder, QuoteStyle};

let builder = WriterBuilder::new()
    .with_quote_style(QuoteStyle::Always); // Equivalent to Spark's quoteAll=true

The quoting style to use when writing CSV data.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Always

This puts quotes around every field. Always.

Necessary

This puts quotes around fields only when necessary.

They are necessary when fields contain a quote, delimiter or record terminator. Quotes are also necessary when writing an empty record (which is indistinguishable from a record with one empty field).

This is the default.

NonNumeric

This puts quotes around all fields that are non-numeric. Namely, when writing a field that does not parse as a valid float or integer, then quotes will be used even if they aren’t strictly necessary.

Never

This never writes quotes, even if it would produce invalid CSV data.

Trait Implementations

impl Clone for QuoteStyle

fn clone(&self) -> QuoteStyle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QuoteStyle

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

Formats the value using the given formatter.

impl Default for QuoteStyle

fn default() -> QuoteStyle

Returns the “default value” for a type.

impl Copy for QuoteStyle