<3 You're welcome! The new revision of the book is using mdbook, which hasn't yet implemented playground support [1]. An RFC has recently been accepted to sta

<3 You're welcome! The new revision of the book is using mdbook, which hasn't yet implemented playground support [1]. An RFC has recently been accepted to start the infrastructure of featuring the new book (and other resources) on doc.rust-lang.org/book, but the implementation isn't done yet. Soon! [1] - https://github.com/azerupi/mdBook/issues/29 https://github.com/azerupi/mdBook/issues/29 [2] - https://github.com/rust-lang/rfcs/blob/master/text/1828-rust-bookshelf.md https://github.com/rust-lang/rfcs/blob/master/text/1828-rust...