Enum TagValue 

pub enum TagValue {
    String(String),
    Integer(i64),
    Float(f64),
    Boolean(bool),
    Array(Vec<TagValue>),
    Binary(String),
    Null,
}

标签值类型 - 支持 ExifTool 返回的所有数据类型

Variants

String(String)

字符串值

Integer(i64)

整数值

Float(f64)

浮点数值

Boolean(bool)

布尔值

Array(Vec<TagValue>)

数组值

Binary(String)

二进制数据（Base64 编码）

Null

空值

Implementations

impl TagValue

pub fn as_string(&self) -> Option<&String>

尝试获取字符串值

pub fn as_integer(&self) -> Option<i64>

尝试获取整数值

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

尝试获取浮点数值

pub fn as_bool(&self) -> Option<bool>

尝试获取布尔值

pub fn as_array(&self) -> Option<&Vec<TagValue>>

尝试获取数组

pub fn to_string_lossy(&self) -> String

转换为字符串表示

pub fn is_null(&self) -> bool

检查是否为空

Trait Implementations

impl Clone for TagValue

fn clone(&self) -> TagValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TagValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TagValue

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for TagValue

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

Formats the value using the given formatter.

impl From<&str> for TagValue

fn from(s: &str) -> Self

Converts to this type from the input type.

impl<T: Into<TagValue>> From<Option<T>> for TagValue

fn from(opt: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for TagValue

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<Vec<TagValue>> for TagValue

fn from(arr: Vec<TagValue>) -> Self

Converts to this type from the input type.

impl From<bool> for TagValue

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<f32> for TagValue

fn from(f: f32) -> Self

Converts to this type from the input type.

impl From<f64> for TagValue

fn from(f: f64) -> Self

Converts to this type from the input type.

impl From<i32> for TagValue

fn from(i: i32) -> Self

Converts to this type from the input type.

impl From<i64> for TagValue

fn from(i: i64) -> Self

Converts to this type from the input type.

impl PartialEq for TagValue

fn eq(&self, other: &TagValue) -> 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 Serialize for TagValue

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TagValue