Trait dyn_fmt::AsStrFormatExt

pub trait AsStrFormatExt: AsRef<str> {
    fn format<'a, T: Display + ?Sized + 'a>(
        &self, 
        args: impl IntoIterator<Item = &'a T> + Clone
    ) -> String { ... }
}

Extends strings with the format method, which is a runtime analog of the format! macro. Unavailable in no_std environment.

Provided methods

fn format<'a, T: Display + ?Sized + 'a>(
    &self,
    args: impl IntoIterator<Item = &'a T> + Clone
) -> String

Creates a String replacing the {}s within self using provided parameters in the order given. A runtime analog of format! macro. In contrast with the macro format string have not be a string literal.

Examples:

use dyn_fmt::AsStrFormatExt;
assert_eq!("{}a{}b{}c".format(&[1, 2, 3]), "1a2b3c");
assert_eq!("{}a{}b{}c".format(&[1, 2, 3, 4]), "1a2b3c"); // extra arguments are ignored
assert_eq!("{}a{}b{}c".format(&[1, 2]), "1a2bc"); // missing arguments are replaced by empty string
assert_eq!("{{}}{}".format(&[1, 2]), "{}1");

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Implementors

impl<T: AsRef<str>> AsStrFormatExt for T

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