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package org.zwobble.mammoth.internal.util;
import java.util.Optional;
import java.util.function.BiFunction;
public class Optionals {
public static <T> Optional<T> first(Optional<T> first, Optional<T> second) {
if (first.isPresent()) {
return first;
} else {
return second;
}
}
public static <T1, T2, R> Optional<R> flatMap(
Optional<T1> first,
Optional<T2> second,
BiFunction<T1, T2, Optional<R>> function)
{
if (first.isPresent() && second.isPresent()) {
return function.apply(first.get(), second.get());
} else {
return Optional.empty();
}
}
public static <T1, T2, R> Optional<R> map(
Optional<T1> first,
Optional<T2> second,
BiFunction<T1, T2, R> function)
{
if (first.isPresent() && second.isPresent()) {
return Optional.of(function.apply(first.get(), second.get()));
} else {
return Optional.empty();
}
}
}
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