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Optional Class in Java and its methods

Optional in Java: An Epic Fact Check

Optional function in swift Protocol

Difference between ? and ?? in JavaScript/Typescript

Javascript Tagalog - Optional Chaining

Remove null check, use the Optional

Spring Boot optional request params

Published go-optional: Go's Generics friendly optional/option type library

Let's use Optional to fix our method contract.

Java 9 Optional Improvements

Optional.stream()

What was added to Java 8? Optional<T> class

Effective Java! Return Optionals Judiciously

Performance matters

Optional to stream in java 9

Optional (null-safe) in javascript

Explain Java 8's Optional Like I'm Five

Initializing Enums With Optionals in Swift

Save the Optional, stop using isPresent

Use Optional / Nullable Reference Types Judiciously