Println the way of Kotlin or Swift

help
1

In Kotlin, we can write:

    fun greet(person: String): Unit {                               
       println("Hello, $person")
    }

In Swift, we can write:

    func greet(person: String) {
       println("Hello, \(person)!")
    }

In Julia, we can write:

    function greet(person::String)
        println("Hello, $person")
    end

In Rust, we can write:

    fn greet(person: &str) {
       println!("Hello, {}", person)
    }

Is there a way in Rust to make the println looks something like the one in Kotlin or Swift, i.e. replacing the "{}", person by something like {person} or \(person)

2

I think the closest that exists today in std is

fn greet(person: &str) {
   println!("Hello, {person}", person = person);
}
2 Likes
3

What if insted of person I've a value, x = 3 and need to write x+2,
In Kotlin => println(${x+2})
In Swift => println(\(x+2))

I tried in Rust => println("{value}, value = x+2) but it failed!

4

A side note, do you have an idea why the code you wrote is coloured, while the ones I wrote are not :slight_smile:

5

It works; you missed a quotation mark:

fn greet(x: i32) {
   println!("Hello, {y}", y = x+1);
}

```rust
fn foo() {}
```
5 Likes
6

https://github.com/rust-lang/rfcs/issues/1250