Enum polars::prelude::QuoteStyle

pub enum QuoteStyle {
    Necessary,
    Always,
    NonNumeric,
    Never,
}

Available on crate feature polars-io only.

Quote style indicating when to insert quotes around a field.

Variants

Necessary

Quote fields only when necessary.

Quotes are necessary when fields contain a quote, separator or record terminator. Quotes are also necessary when writing an empty record (which is indistinguishable from arecord with one empty field). This is the default.

Always

Quote every field. Always.

NonNumeric

Quote non-numeric fields.

When writing a field that does not parse as a valid float or integer, quotes will be used even if they aren’t strictly necessary.

Never

Never quote any fields, even if it would produce invalid CSV data.

Trait Implementations

impl Clone for QuoteStyle

fn clone(&self) -> QuoteStyle

Returns a copy 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 Hash for QuoteStyle

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

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for QuoteStyle

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for QuoteStyle

impl Eq for QuoteStyle

impl StructuralPartialEq for QuoteStyle