Struct LineItem

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pub struct LineItem {
    pub line_number: Option<u32>,
    pub service_name: Option<String>,
    pub description: String,
    pub quantity: Option<f64>,
    pub unit: Option<String>,
    pub unit_price: Option<f64>,
    pub discount: Option<f64>,
    pub tax_rate: Option<f64>,
    pub tax_amount: Option<f64>,
    pub amount: f64,
}

Expand description

发票行项目结构体（单个商品/服务明细）

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§line_number: Option<u32>

行号

§service_name: Option<String>

服务/项目名称（如：Amazon CloudFront）

§description: String

使用类型/描述（如：US-Requests-Tier2-HTTPS）

§quantity: Option<f64>

数量

§unit: Option<String>

单位（如：个、件、小时等）

§unit_price: Option<f64>

单价

§discount: Option<f64>

折扣金额

§tax_rate: Option<f64>

税率（百分比）

§tax_amount: Option<f64>

税额

§amount: f64

金额（数量 × 单价 - 折扣 + 税额）

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impl LineItem

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pub fn calculate_amount(&self) -> f64

计算行项目金额：数量 × 单价 - 折扣 + 税额

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pub fn validate_amount(&self) -> LineItemValidation

验证单价×数量是否等于金额返回 (是否有效, 计算值, 差异值)

Trait Implementations§

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impl Clone for LineItem

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fn clone(&self) -> LineItem

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 LineItem

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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 LineItem

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fn default() -> LineItem

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

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impl<'de> Deserialize<'de> for LineItem

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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 Serialize for LineItem

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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

Auto Trait Implementations§

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impl UnwindSafe for LineItem

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, U> Into 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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