I love the idea of immutability in Swift too. let x = 42 However, for mutability I prefer when the language uses another keyword. Swift uses 'var'. Scala an

I love the idea of immutability in Swift too. let x = 42 However, for mutability I prefer when the language uses another keyword. Swift uses 'var'. Scala and Kotlin I believe use val and var. Throw in non-optional by default and I feel like programming becomes more enjoyable.