8/2/2023 0 Comments Kotlin map not null![]() ![]() 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. Solution 2 There is another method for getting not null value from map: fun Map.You are using a Map and a map may not have a key hence operator returns nullable type. Swift has associated values and raw values for enums, while Kotlin has sealed classes and enum classes. Solution 1 It is not about the implementation of Map (being it Kotlin or Java based). ![]() It forces you to handle the fact that the value might be null to prevent runtime exceptions. Swift has arrays, sets, and dictionaries as collection types, while Kotlin has lists, sets, and maps. Thatâs why the return type is marked clearly as a nullable type. For example, Swift uses the ? and ! operators to unwrap optionals, while Kotlin uses the ? and !! operators. However, there are also some notable differences, such as how they handle optionals, collections, enums, data classes, and properties. 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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