IntStream mapToDouble() returns a DoubleStream consisting of the results of applying the given function to the elements of this stream.
Note : IntStream mapToDouble() is a intermediate operation. These operations are always lazy. Intermediate operations are invoked on a Stream instance and after they finish their processing, they give a Stream instance as output.
DoubleStream mapToDouble(IntToDoubleFunction mapper)
- DoubleStream : A sequence of primitive double-valued elements. This is the double primitive specialization of Stream.
- mapper : A stateless function to apply to each element.
Return Value : The function returns a DoubleStream consisting of the results of applying the given function to the elements of this stream.
Example 1 :
2.0 4.0 6.0 8.0 10.0
Example 2 :
1.6666666666666667 2.0 2.3333333333333335 2.6666666666666665 3.0
Example 3 :
-0.9589242746631385 -0.27941549819892586 0.6569865987187891 0.9893582466233818 0.4121184852417566
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