Swift

Combine was introduced as a new framework by Apple at WWDC 2019. The framework provides a declarative Swift API for ...
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Optionals types in Swift either have a value or not, and there are several ways to test optionals using the ...
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Rethrows in Swift allows forwarding a thrown error by a given function parameter. It's used a lot in methods like ...
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@autoclosure in Swift is a type of closure that allows to omit braces and make it look like a normal ...
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Lazy collections are similar to a regular collection but change the way how modifiers like map, filter, and reduce are ...
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Variadic parameters make it possible to pass zero or more values of a specific type into a function. It can ...
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Result builders in Swift allow you to build up a result using 'build blocks' lined up after each other. They ...
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XCTExpectFailure was introduced in Xcode 12.5 and allows marking test failures as expected. The first time I read about this ...
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A lazy var is a property whose initial value is not calculated until the first time it's called. It's part ...
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Closures in Swift can be challenging to understand with types like trailing closures, capturing lists, and shorthand syntaxes. They're used ...
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Computed properties are part of a family of property types in Swift. Stored properties are the most common which save ...
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Every year I'm looking back at what I achieved with SwiftLee as well as what I want to achieve in ...
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