Struct I18nFormatter 

pub struct I18nFormatter { /* private fields */ }

基于 ICU4X 编译数据的 locale 感知格式化器。

通过 BCP-47 locale 标签（如 "en-US"、"zh-CN"）构造。 所有格式化器在构造时 eagerly 创建，后续格式化调用低分配。

Implementations

impl I18nFormatter

pub fn new(locale: &str) -> Result<Self, I18nError>

Create a new formatter for the given BCP-47 locale tag.

Errors

Returns I18nError::InvalidLocale if the tag cannot be parsed, or I18nError::FormatError if ICU4X lacks compiled data for it.

pub fn format_number(&self, value: f64) -> Result<String, I18nError>

Format a floating-point number with locale-sensitive grouping and decimal separators.

Errors

Returns I18nError::InvalidNumber for non-finite values or if the value cannot be parsed into a fixed decimal.

pub fn format_date( &self, year: i32, month: u8, day: u8, ) -> Result<String, I18nError>

Format an ISO calendar date (year / month / day) using a medium length locale-specific pattern.

Errors

Returns I18nError::DateError if any component is out of range, or I18nError::FormatError if the formatter cannot be constructed.

pub fn plural_category(&self, count: u64) -> Result<PluralCategory, I18nError>

Return the plural category for count in the formatter’s locale.

Errors

This method does not currently fail, but returns Result for API consistency with the other formatting methods.

pub fn compare(&self, a: &str, b: &str) -> Result<Ordering, I18nError>

Compare two strings using locale-sensitive collation rules.

Errors

This method does not currently fail, but returns Result for API consistency with the other formatting methods.

Trait Implementations

impl Debug for I18nFormatter

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

Formats the value using the given formatter.