Kotlin has properties that can have getters and setters, while Swift has computed properties and property observers. Kotlin has data classes that automatically generate equals, hashCode, toString, and copy methods, while Swift does not. Swift has associated values and raw values for enums, while Kotlin has sealed classes and enum classes. Swift has arrays, sets, and dictionaries as collection types, while Kotlin has lists, sets, and maps. For example, Swift uses the ? and ! operators to unwrap optionals, while Kotlin uses the ? and !! operators. Thatâs what we generally call lazy loading, and. Which could even store the value if youâre low on CPU resources. throws NoSuchElementException - when the map doesn't contain a value for the specified key and no implicit default value was provided for that map. However, there are also some notable differences, such as how they handle optionals, collections, enums, data classes, and properties. get () findViewById (R.id.myview) Or use a delegate to compute that value. There is another method for getting not null value from map: fun Map.getValue(key: K): V.They also support some advanced concepts, such as generics, lambdas, extensions, null safety, and coroutines or async/await. Swift and Kotlin have many similarities in their syntax and features, such as using curly braces for blocks, semicolons for line endings, variables, constants, functions, classes, and protocols or interfaces.
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