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What’s the difference between these two methods: Optional.flatMap() and Optional.map()? An example would be appreciated. 8 Answers 8
I am trying to understand the difference between the Optional<T>.orElse() and Optional<T>.orElseGet() methods. The description for the orElse() method is “Return the value ...
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May 20, 2022
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From Apple’s documentation: You can use if and let together to work with values that might be missing. These values are represented as ...
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May 19, 2022
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When using the Java 8 Optional class, there are two ways in which a value can be wrapped in an optional. String foobar ...
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May 17, 2022
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This question already has answers here: Is it possible to have placeholders in strings.xml for runtime values? (14 answers) Closed 4 years ago. ...
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May 15, 2022
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In Java 8, I want to do something to an Optional object if it is present, and do another thing if it is ...
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May 13, 2022
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Optional type introduced in Java 8 is a new thing for many developers. Is a getter method returning Optional<Foo> type in place of ...
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May 13, 2022
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Why would you create a “Implicitly Unwrapped Optional” vs creating just a regular variable or constant? If you know that it can be ...
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May 3, 2022
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The Swift Programming Language guide has the following example: class Person { let name: String init(name: String) { self.name = name } var ...
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May 2, 2022
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