Enum Value 

pub enum Value {
    String(String),
    U8(u8),
    U16(u16),
    U32(u32),
    I16(i16),
    I32(i32),
    URational(u32, u32),
    IRational(i32, i32),
    F32(f32),
    F64(f64),
    Binary(Vec<u8>),
    List(Vec<Value>),
    Undefined(Vec<u8>),
}

Represents a metadata tag value, which can be of various types.

Variants

String(String)

ASCII/UTF-8 string

U8(u8)

Unsigned 8-bit integer

U16(u16)

Unsigned 16-bit integer

U32(u32)

Unsigned 32-bit integer

I16(i16)

Signed 16-bit integer

I32(i32)

Signed 32-bit integer

URational(u32, u32)

Unsigned rational (numerator/denominator)

IRational(i32, i32)

Signed rational (numerator/denominator)

F32(f32)

32-bit float

F64(f64)

64-bit float

Binary(Vec<u8>)

Raw binary data

List(Vec<Value>)

A list of values (e.g., GPS coordinates, color space arrays)

Undefined(Vec<u8>)

Undefined/opaque bytes with a semantic type hint

Implementations

impl Value

pub fn to_display_string(&self) -> String

Convert to string representation (PrintConv equivalent).

pub fn as_f64(&self) -> Option<f64>

Try to interpret the value as a float.

pub fn as_str(&self) -> Option<&str>

Try to interpret the value as a string.

pub fn as_u64(&self) -> Option<u64>

Try to interpret the value as an unsigned integer.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl PartialEq for Value

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for Value