后期格式化

这个crate提供了一个简单的方法来在运行时字符串中格式化参数，带有运行时参数名称。

这是使用复杂模板引擎的替代方案。

示例

use hydroperfox_lateformat::LateFormat;
use maplit::hashmap;

let user_string: String = "some user string: {id}".into();
assert_eq!(
    "some user string: x",
    user_string.hydroperfox_lateformat(hashmap!{"id".into() => "x".into()})
);

let user_string: String = r#"some user string: {"id"}"#.into();
assert_eq!(
    "some user string: id",
    user_string.hydroperfox_lateformat(hashmap!{"id".into() => "x".into()})
);

let user_string: String = r#"some user string: {  "id"  }"#.into();
assert_eq!(
    "some user string: id",
    user_string.hydroperfox_lateformat(hashmap!{"id".into() => "x".into()})
);

let user_string: String = "some user string: {id}".into();
assert_eq!(
    "some user string: None",
    user_string.hydroperfox_lateformat(hashmap!{})
);