Show example of unicode character spelling for emoji?

[Chris Krycho]

Hello Rust ,

I am reading chapter 2 on Character Types, the books shows

fn main() {
    let c = 'z';
    let z: char = 'ℤ'; // with explicit type annotation
    let heart_eyed_cat = '😻';
}

I am wondering if you can show the use of unicode since "Unicode Scalar Values range from U+0000 to U+D7FF and U+E000 to U+10FFFF inclusive. " is in the paragraph under the code block.

The example I tested out and was happy it works is
let emoji = "\u{1F603}";

Could this be added to the book?

Originally posted by @PythonCoderUnicorn in #3794 (comment)

[Chris Krycho]

@PythonCoderUnicorn thanks for the suggestion. Can you help me understand a bit why you want a dedicated example for the Unicode “spelling” of the emoji? Note that there are a bunch of ways of writing character literals we do not include in that short example, since you can also “spell” it with a binary literal and so on.

[Zane (She/They)]

Whenever I work with emojis I often use the unicode approach to explicitly have the emoji print out.

The standard Rust way as shown, having an emoji copy and pasted in the code (also a method in other languages) is not my preferred way. To me that is an extra step, I have to go to an app , get the emoji and paste it in.

I was just curious if the example could show another way of doing things.

Am not familiar with the spelling out the binary literal method. Anyway, thanks for responding.

[Carol (Nichols || Goulding)]

This way of constructing character literals is covered by the reference, and I think that's sufficient. The book is not aiming to be comprehensive. Thanks for the feedback though!