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Function composition

Theory

Composing operators

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You have the following part of code:

IntUnaryOperator mult2 = num -> num * 2;
IntUnaryOperator add3 = num -> num + 3;

IntUnaryOperator combinedOperator = add3.compose(mult2.andThen(add3)).andThen(mult2);
int result = combinedOperator.applyAsInt(5);

The result is ...

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