Struct TemplateString 

pub struct TemplateString<T> { /* private fields */ }

A type-safe template string that can be formatted with values of type T.

Template strings contain placeholders in the form {field_name} that correspond to fields in type T. The template is validated at parse time to ensure all placeholders are valid.

Examples

#[derive(TemplateParams)]
struct Person {
    name: String,
    title: String,
}

let template: TemplateString<Person> = "Dear {title} {name}".parse().unwrap();
let person = Person {
    name: "Smith".to_string(),
    title: "Dr.".to_string(),
};
assert_eq!(template.format(&person), "Dear Dr. Smith");

Implementations

impl<T: TemplateParams> TemplateString<T>

pub fn format(&self, params: &T) -> String

Format the template with the provided parameter values.

Examples

#[derive(TemplateParams)]
struct Data {
    x: i32,
    y: i32,
}

let template: TemplateString<Data> = "Point: ({x}, {y})".parse().unwrap();
let data = Data { x: 10, y: 20 };
assert_eq!(template.format(&data), "Point: (10, 20)");

Trait Implementations

impl<T> Clone for TemplateString<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for TemplateString<T>

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

Formats the value using the given formatter.

impl<T: TemplateParams> Display for TemplateString<T>

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

Formats the value using the given formatter.

impl<T: TemplateParams> FromStr for TemplateString<T>

type Err = String

The associated error which can be returned from parsing.

fn from_str(template: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl<T> PartialEq for TemplateString<T>

fn eq(&self, other: &Self) -> 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.