org.rrd4j.core

## Interface XmlWriter.DoubleFormater

- Enclosing class:
    XmlWriter
  Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

      @FunctionalInterface
      public static interface XmlWriter.DoubleFormater

  Functional interface for formatting double values in XML output.

  This interface allows customization of how double values are formatted when written to XML, including handling of NaN values.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `format(double value, String nanString)` Formats a double value for XML output.

- - ### Method Detail

    - #### format

          String format(double value,
                        String nanString)

      Formats a double value for XML output.
      Parameters:
        `value` - the double value to format
        `nanString` - the string to use for NaN values
      Returns:
        the formatted string representation