[LRUG] Comparable Null Objects

[Michael Pavling]

On 15 Jul 2015 15:29, "Michael Pavling" <pavling at gmail.com> wrote:
>
> Instead of including `Comparable`, set your `NoExpectedDate` class to
inherit from `Date` (keep the overloads of `.to_s` and `.<=>`)

Though you need to change your `.<=>` method to return -1 for sensible
results in the console, but this approach makes both evaluations treat your
NoExpectedDates as older than any other date, which may be the opposite of
what you want.
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