Mut vs Immutable: Why Rust Makes You Choose
Go to Rust Series: ← Lifetimes Explained | Series Overview | String vs &str → The Default Difference Go: Everything is mutable by default Rust: Everything is immutable by default This single difference shapes how you write code in each language. Go: Mutable by Default Go: func main() { x := 10 x = 20 // No problem x = x + 5 // No problem fmt.Println(x) // 25 } Variables are mutable unless you use const (which is very limited): const PI = 3.14 // Compile-time constant only PI = 3.14159 // Error Rust: Immutable by Default Rust: ...