The code shown in the article isn't Rust, but Rune [0], which has similar syntax, but is a dynamic scripting language. It has template literals [1]. [0] https:

The code shown in the article isn't Rust, but Rune [0], which has similar syntax, but is a dynamic scripting language. It has template literals [1]. [0] https://rune-rs.github.io/ https://rune-rs.github.io/ [1] https://rune-rs.github.io/book/template_literals.html https://rune-rs.github.io/book/template_literals.html