Countriex

Countriex 是一个 Rust 库，提供有关世界各地的国家信息。它包含关于广泛主题的数据，包括人口、位置和官方语言。它包括来自 ISO 3166（国家/地区）、ISO 4217（货币）和 E.164（电话号码）的数据。

用法

要在 Rust 项目中使用 Countriex 库，请将以下行添加到您的 Cargo.toml 文件中

[dependencies]
countriex = "0.1.0"

然后，使用 use 关键字将库导入到您的 Rust 代码中

use countriex::{all, get_by, filter};

示例

use countriex::{all, get_by, filter};

fn main() {
    // Get the total number of countries
    let total_countries = all();
    println!("Number of countries: {:?}", total_countries);

    // Find a country by its 2-letter ISO code (alpha2)
    let country_alpha2 = get_by("alpha2", "US");
    println!("Country by alpha2: {:?}", country_alpha2);

    // Find a country by its 3-letter ISO code (alpha3)
    let country_alpha3 = get_by("alpha3", "USA");
    println!("Country by alpha3: {:?}", country_alpha3);

    // Find a country by its common name
    let country_name = get_by("name", "United States");
    println!("Country by name: {:?}", country_name);

    // Find all countries in a specific continent
    let countries_in_asia = filter("continent", "Asia");
    println!("Countries in Asia: {:?}", countries_in_asia);

    // Find all countries in a specific region
    let countries_in_southern_europe = filter("region", "Southern Europe");
    println!("Countries in Southern Europe: {:?}", countries_in_southern_europe);

    // Find all EU member countries
    let eu_member_countries = filter("eu_member", "true");
    println!("EU member countries: {:?}", eu_member_countries);
}

函数

Countriex 提供以下函数

• all()：返回国家的总数。

• get_by(key: &str, value: &str) -> Option<Country>：返回符合给定条件的第一个国家，如果不存在具有该数据的国家，则返回 None。
• filter(key: &str, value: &str) -> Vec<Country>：返回所有符合给定条件的国家，如果条件与任何国家不匹配，则返回 []。

致谢

此库使用 restcountries API 的数据。