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    Class RandomExtensions

    Random class extension methods.

    Inheritance
    object
    RandomExtensions
    Namespace: Neon.Common
    Assembly: Neon.Common.dll
    Syntax
    public static class RandomExtensions

    Methods

    NextIndex(Random, int)

    Returns a random index into a sequence whose length is specified.

    Declaration
    public static int NextIndex(this Random random, int length)
    Parameters
    Type Name Description
    Random random

    The Random instance.

    int length

    The sequence length.

    Returns
    Type Description
    int

    The random index.

    Exceptions
    Type Condition
    IndexOutOfRangeException

    Thrown if length is <= 0.

    RandomTimespan(Random, TimeSpan)

    Returns a random TimeSpan between zero and a specified maximum.

    Declaration
    public static TimeSpan RandomTimespan(this Random random, TimeSpan maxInterval)
    Parameters
    Type Name Description
    Random random

    The Random instance.

    TimeSpan maxInterval

    The maximum interval.

    Returns
    Type Description
    TimeSpan

    The random timespan.

    Remarks

    This method is useful for situations where its desirable to have some variation in a delay before performing an activity like retrying an operation or performing a background task.

    RandomTimespan(Random, TimeSpan, double)

    Returns a TimeSpan between the specified base interval plus a random period of the specified fraction of the value.

    Declaration
    public static TimeSpan RandomTimespan(this Random random, TimeSpan baseInterval, double fraction)
    Parameters
    Type Name Description
    Random random

    The Random instance.

    TimeSpan baseInterval

    The base interval.

    double fraction

    The fractional multiplier for the random component.

    Returns
    Type Description
    TimeSpan

    The random timespan.

    Remarks

    The value returned is at least as large as baseInterval with an added random fractional interval if fraction is positive or the value returned may be less than baseInterval for a negative fraction. This is computed via:

    baseInterval + RandTimespan(TimeSpan.FromSeconds(baseInterval.TotalSeconds * fraction));

    This method is useful for situations where its desirable to have some variation in a delay before performing an activity like retrying an operation or performing a background task.

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