polars_io::csv::write

Enum QuoteStyle

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pub enum QuoteStyle {
    Necessary,
    Always,
    NonNumeric,
    Never,
}
Available on crate features csv or json only.
Expand description

Quote style indicating when to insert quotes around a field.

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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.

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Always

Quote every field. Always.

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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.

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Never

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

Trait Implementations§

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impl Clone for QuoteStyle

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fn clone(&self) -> QuoteStyle

Returns a copy 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 QuoteStyle

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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 QuoteStyle

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fn default() -> QuoteStyle

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for QuoteStyle

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Hash for QuoteStyle

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for QuoteStyle

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for QuoteStyle

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for QuoteStyle

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impl Eq for QuoteStyle

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impl StructuralPartialEq for QuoteStyle

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impl<T> Any for T
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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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fn equivalent(&self, key: &K) -> bool

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fn from(t: T) -> T

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fn instrument(self, span: Span) -> Instrumented<Self>

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