Implement new Concept Exercise: pattern-matching-tuples

[ErikSchierboom]

This issue describes how to implement the pattern-matching-tuples concept exercise for the C# track.

Getting started

Please please please read the docs before starting. Posting PRs without reading these docs will be a lot more frustrating for you during the review cycle, and exhaust Exercism's maintainers' time. So, before diving into the implementation, please read up on the following documents:

• The features of v3.
• Rationale for v3.
• What are concept exercise and how they are structured?

Please also watch the following video:

• The Anatomy of a Concept Exercise.

Goal

The goal of this exercise is to teach the student some of the advanced features of the Concept of Tuples in C#.

Learning objectives

• Know how to pattern match on tuples.
• Know how to add tuple pattern matching to your own and built-in types.
• Know that the ValueTuple type has obsoleted the Tuple type and why.

Out of scope

Nothing.

Concepts

This Concepts Exercise's Concepts are:

• pattern-matching-tuples: know how to pattern matching on tuples; know how to add tuple pattern matching to other types; know that the ValueTuple type has obsoleted the Tuple type and why.

Prequisites

This Concept Exercise's prerequisites Concepts are:

• tuples: know the basics about tuples.
• pattern-matching-constants: know how to do pattern matching on constant values.
• extension-methods: a built-in library class will have tuple deconstruction added to it.

Resources to refer to

Hints

• Tuple pattern: shows how to pattern match tuples.
• Deconstructing tuples: shows how to do tuple deconstruction for custom and built-in types.

After

• Tuple pattern: shows how to pattern match tuples.
• Deconstructing tuples: shows how to do tuple deconstruction for custom and built-in types.

Representer

This exercise does not require any specific representation logic to be added to the representer.

Analyzer

This exercise does not require any specific analyzer logic to be added to the analyzer.

Implementing

To implement this exercise, please follow these instructions.

Help

If you have any questions while implementing the exercise, please post the questions as comments in this issue.

[mikedamay]

Consider forking some of tuples from the elixir track.

[mikedamay]

Include use of discards.