java - Why is there no mapToInt() in the OptionalInt class? -

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the intstream class has map(), maptoobj(), maptolong() , maptodouble() methods, methods seem missing optionalint class.

is there reason methods missing?

rather obtusely can do

optionalint oi = optionalint.of(1); oi.ifpresent(i -> intstream.of(i).map(j -> j + 1).foreach(system.out::println));

however not clear why optionalint doesn't have same methods intstream although note optional has subset of stream


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