Example usage for java.util.stream DoubleStream map

Introduction

In this page you can find the example usage for java.util.stream DoubleStream map.

Prototype

DoubleStream map(DoubleUnaryOperator mapper);

Source Link

Document

Returns a stream consisting of the results of applying the given function to the elements of this stream.

Usage

From source file:Main.java

public static void main(String[] args) {
    DoubleStream b = DoubleStream.of(1.1, 2.2, 3.3, 4.4, 5.5);
    b.map(n -> n * n).forEach(System.out::println);
}

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From source file:de.tynne.benchmarksuite.Main.java

private static double standardDeviationOf(DoubleStream doubleStream, double average) {
    double sum = doubleStream.map(x -> Math.pow(x - average, 2.)).average().getAsDouble();
    return Math.sqrt(sum);
}

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From source file:org.bonej.ops.ellipsoid.EllipsoidPoints.java

/**
 * Calculates the μ-factor of a point.
 *
 * @param v a point on a unit sphere surface.
 * @return inverse ratio of ellipsoid surface area around given point.
 *//*w  w w .  ja v a2  s .c  o m*/
private double mu(final Vector3d v) {
    final DoubleStream terms = DoubleStream.of(a * c * v.y, a * b * v.z, b * c * v.x);
    final double sqSum = terms.map(x -> x * x).sum();
    return Math.sqrt(sqSum);
}

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