@Override
public OptionalInt findAny() {
Integer result =
performOperation(
TerminalFunctions.findAnyIntFunction(),
false,
(i1, i2) -> {
if (i1 != null) {
return i1;
} else {
return i2;
}
},
a -> a != null);
if (result != null) {
return OptionalInt.of(result);
} else {
return OptionalInt.empty();
}
}
@Override
public OptionalInt max() {
Integer value =
performOperation(
TerminalFunctions.maxIntFunction(),
false,
(i1, i2) -> {
if (i1 != null) {
if (i2 != null) {
return i1 > i2 ? i1 : i2;
}
return i1;
}
return i2;
},
null);
if (value == null) {
return OptionalInt.empty();
} else {
return OptionalInt.of(value);
}
}
@Override
public OptionalInt reduce(IntBinaryOperator op) {
Integer result =
performOperation(
TerminalFunctions.reduceFunction(op),
true,
(i1, i2) -> {
if (i1 != null) {
if (i2 != null) {
return op.applyAsInt(i1, i2);
}
return i1;
}
return i2;
},
null);
if (result == null) {
return OptionalInt.empty();
} else {
return OptionalInt.of(result);
}
}