Type Alias Key

Source

pub type Key = Value;

Expand description

Type alias for map and document keys.

§Purpose

Alias for Value used as keys in map structures. Since Value is used for both document values and map keys, this type alias provides semantic clarity that a Value is being used as a key rather than a regular value.

§Characteristics

Same as Value: Supports all Value types as keys
Comparable: Implements Ord for key ordering
Hashable: Implements Hash for use in hash-based structures
Generic: Works with any Value variant that implements the required traits

§Usage

Used with the key! macro for convenient key creation:

let k = key!("field_name");  // Create a string key
let k = key!(42);             // Create an integer key

Aliased Type§

pub enum Key {
Show 24 variants    Null,
    Bool(bool),
    I8(i8),
    U8(u8),
    I16(i16),
    U16(u16),
    I32(i32),
    U32(u32),
    I64(i64),
    U64(u64),
    I128(i128),
    U128(u128),
    ISize(isize),
    USize(usize),
    F32(f32),
    F64(f64),
    Char(char),
    String(String),
    Document(Document),
    Array(Vec<Value>),
    Map(BTreeMap<Value, Value>),
    NitriteId(NitriteId),
    Bytes(Vec<u8>),
    Unknown,
}