This article goes over a Nullable/Optional/Maybe implementation for C#.

http://twistedoakstudios.com/blog/Post1130_when-null-is-not-enough-an-option-type-for-c

http://www.reddit.com/r/programming/comments/14930f/when_null_is_not_enough_an_option_type_for_c/

It seems to be similar to that of std.typecons.Nullable with the following differences.

The only way to get at the value is to call the Match function, this takes a delegate to handle the value and one to handle the absence of the value.

Most everything else is handled as helper functions residing outside the type.

The get() method is implemented as helper ForceGetValue.

He also creates an Else function to provided the value or an alternative if not available.

Sorry if bearophile already got to this one and I missed that.

Jesse Phillips:

> It seems to be similar to that of std.typecons.Nullable with the following differences.

Recently I've written something about Nullable:
http://d.puremagic.com/issues/show_bug.cgi?id=9086

Bye,
bearophile

On Wednesday, 5 December 2012 at 00:10:30 UTC, Jesse Phillips wrote:
> This article goes over a Nullable/Optional/Maybe implementation for C#.
>
> http://twistedoakstudios.com/blog/Post1130_when-null-is-not-enough-an-option-type-for-c
>
> http://www.reddit.com/r/programming/comments/14930f/when_null_is_not_enough_an_option_type_for_c/
>

Also
http://devtalk.net/csharp/chained-null-checks-and-the-maybe-monad/