Trait Join 

pub trait Join {
    type Item;

    // Required methods
    fn join(&mut self, sep: &str) -> String
       where Self::Item: Display;
    fn join_format<F>(&mut self, sep: &str, f: F) -> String
       where F: Fn(&Self::Item) -> String;
}

Required Associated Types

type Item

Required Methods

fn join(&mut self, sep: &str) -> String

where Self::Item: Display,

Returns a string that contains the items separated by the separator string.

use stringx::Join;

assert_eq!((1..=5).join(", "), "1, 2, 3, 4, 5")

fn join_format<F>(&mut self, sep: &str, f: F) -> String

where F: Fn(&Self::Item) -> String,

Works like Join::join but takes an additional formatting closure as argument.

use stringx::Join;

let string = [Some(8379), Some(990), None, Some(974385)]
	.iter()
	.join_format(" | ", |item| match item {
		Some(number) => number.to_string(),
		None => "_".into(),
	});
assert_eq!(string, "8379 | 990 | _ | 974385");

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<I: Iterator> Join for I

type Item = <I as Iterator>::Item