Swift delight: guard. I was never interested in `unless`; `if !foo` never bothered me. But you can’t negate pattern-matching in the same way, and Swift’s `if let` was a form of pattern-matching specific to Optional.

— Jordan Rose (@UINT_MIN) September 29, 2021

Part of the Swift Regrets series.

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Swift regret: inferred types for globals and stored properties

In Swift, as in many other statically-typed languages these days, you can say `var x = 5` and the compiler figures out that `x` is an Int. That’s fine.

— Jordan Rose (@UINT_MIN) September 24, 2021

Part of the Swift Regrets series.

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Swift regret: implicit initialization of Optional variables

In Swift, stored properties and local variables aren’t initialized by default; the compiler makes you do it. Unless it’s Optional and mutable (var, not let).

— Jordan Rose (@UINT_MIN) September 22, 2021

Part of the Swift Regrets series.

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