> Diverging from TFA, local bindings are immutable (by default), however there have been rumblings about dropping this, and essentially always making them mutab

> Diverging from TFA, local bindings are immutable (by default), however there have been rumblings about dropping this, and essentially always making them mutable because the signal is pretty low. I hope that never happens; one of the best things in Rust is that it's easier (less typing) to make things non-mutable, which in the case of local bindings tends to encourage a more functional programming style (for instance, it encourages "let x = if foo { bar } else { baz };" instead of "let mut x; if foo { x = bar; } else { x = baz; }").