February 2020
Intermediate to advanced
412 pages
9h 36m
English
Content preview from Learning RxJava - Second Edition
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Dealing with SAM ambiguity
In Java, an interface with a single abstract method is called a functional interface. This means a functional interface in Java is SAM in Kotlin.
At the time of writing, when Kotlin invokes Java libraries with functional parameters, a problem may rear its head in RxJava 2.x when several overloads of the method with functional parameters are introduced. Kotlin does not have this issue when invoking Kotlin libraries, but it does with Java libraries. When there are multiple argument overloads for different functional SAM types on a given Java method, Kotlin gets lost in its inference and needs help. Until JetBrains resolves this issue, you will need to work around this either by being explicit or by using RxKotlin's ...
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