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0ed0eef71a
Instead of placing the link to the recommended resource i.e. the second edition in second place, push it up to the top of the list. In fact, push the link to the first edition always at the bottom. To emphasise even more that's where new visitors should go, bolden the first link, and make the first-ed link smaller. All this as well as a slight edit and simplification of the copy is designed to make the new and recommended resources the primary path readers take, without hiding the old resource completely.
611 B
611 B
% Mutability
There is a new edition of the book and this is an old link.
Variables are immutable only by default; we can make them mutable by adding mut in front of the variable name.
let mut x = 5;
println!("The value of x is: {}", x);
x = 6;
println!("The value of x is: {}", x);
Here are the relevant sections in the new and old books: