Identifier

Struct Identifier 

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pub struct Identifier(/* private fields */);
Expand description

An identifier (column name, table name, alias) optimized for small strings.

Uses SmolStr internally which stores strings up to 22 bytes inline, avoiding heap allocation for typical identifier names.

§Examples

use prax_query::builder::Identifier;

let id = Identifier::new("user_id");
assert_eq!(id.as_str(), "user_id");

// From static str (zero-copy)
let id: Identifier = "email".into();

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impl Identifier

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pub fn new(s: impl AsRef<str>) -> Self

Create a new identifier from any string-like type.

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pub const fn from_static(s: &'static str) -> Self

Create from a static string (zero allocation).

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pub fn as_str(&self) -> &str

Get the identifier as a string slice.

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pub fn is_inline(&self) -> bool

Check if the string is stored inline (no heap allocation).

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pub fn len(&self) -> usize

Get the length of the identifier.

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pub fn is_empty(&self) -> bool

Check if the identifier is empty.

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impl AsRef<str> for Identifier

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fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for Identifier

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fn clone(&self) -> Identifier

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 Identifier

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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 Identifier

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fn default() -> Self

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

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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 From<&String> for Identifier

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fn from(s: &String) -> Self

Converts to this type from the input type.
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impl From<&str> for Identifier

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fn from(s: &str) -> Self

Converts to this type from the input type.
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impl From<Cow<'_, str>> for Identifier

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fn from(s: Cow<'_, str>) -> Self

Converts to this type from the input type.
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impl From<String> for Identifier

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fn from(s: String) -> Self

Converts to this type from the input type.
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impl Hash for Identifier

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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 Identifier

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fn eq(&self, other: &Identifier) -> 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 Eq for Identifier

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impl StructuralPartialEq for Identifier

Auto Trait Implementations§

Blanket 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> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> ToSmolStr for T
where T: Display + ?Sized,

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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. 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<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more