Complete pattern matching: deconstruction and object-behavior tutorial - #56286
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Closes dotnet#55928 (Everyday C# Phase F, PR 21). - Revise and move fundamentals/functional/deconstruct.md to fundamentals/patterns/deconstruct.md, covering tuples, records, custom Deconstruct methods/overloads, extension-method deconstruction, and mixed declared/var/discard deconstructions. Consolidate its samples into the shared patterns snippets project. - Migrate tutorials/patterns-objects.md (canal-lock state-machine tutorial) to fundamentals/tutorials/pattern-matching.md, with its own snippet project. - Relocate the pre-existing "type-driven and data-driven algorithms" (toll-calculator) tutorial to fundamentals/tutorials/advanced/pattern-matching.md to free the fundamentals/tutorials/pattern-matching.md slug for the migrated tutorial; update its snippet source paths and inbound links. - Update toc.yml: add the deconstruct article and both tutorials in their new locations; remove the now-empty Functional techniques node and the legacy top-level "Explore patterns in objects" entry. - Add/update redirects for every moved path, including the former functional/deconstruct.md and tutorials/patterns-objects.md locations, and the top-level docs/csharp/deconstruct.md redirect target. - Fix inbound links across the guide (types/tuples.md, discards.md, property-positional-patterns.md, language-reference pages, misc/ compiler-message pages, tour-of-csharp) that referenced the old functional/ and top-level tutorial paths. Completes Pattern matching (§11) with no remaining planned core gaps; all moved paths have redirects, and no former functional/ deconstruction path breaks. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Copilot review overview
🟡 Changes recommended
The moved advanced tutorial contains broken relative references, and stale routing sends readers to the wrong tutorial.
Review effort: Balanced
Findings: 5
Open (5)
What changed in this PR
This PR reorganizes and completes the C# pattern-matching documentation.
Changes:
- Adds expanded deconstruction guidance and consolidated samples.
- Moves the canal-lock and toll-calculator tutorials into Fundamentals.
- Updates navigation, links, redirects, and obsolete files.
| File | Description |
|---|---|
.openpublishing.redirection.csharp.json |
Updates redirects for moved content. |
docs/csharp/advanced-topics/expression-trees/index.md |
Updates the deconstruction link. |
docs/csharp/fundamentals/expressions/operators.md |
Updates the deconstruction link. |
docs/csharp/fundamentals/functional/deconstruct.md |
Removes the superseded article. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/Program.cs |
Removes legacy snippet scaffolding. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/class-discard1.cs |
Removes a legacy discard sample. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-class1.cs |
Removes a legacy class sample. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-class2.cs |
Removes legacy overload samples. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-extension1.cs |
Removes a legacy extension sample. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-kvp.cs |
Removes a legacy dictionary sample. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-tuple1.cs |
Removes legacy tuple sample 1. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-tuple2.cs |
Removes legacy tuple sample 2. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-tuple3.cs |
Removes legacy tuple sample 3. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-tuple4.cs |
Removes legacy tuple sample 4. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-tuple5.cs |
Removes legacy tuple sample 5. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruct-tuple6.cs |
Removes legacy tuple sample 6. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/deconstruction.csproj |
Removes the legacy snippet project. |
docs/csharp/fundamentals/functional/snippets/deconstructing-tuples/discard-tuple1.cs |
Removes the legacy tuple-discard sample. |
docs/csharp/fundamentals/patterns/deconstruct.md |
Adds comprehensive deconstruction guidance. |
docs/csharp/fundamentals/patterns/discards.md |
Updates deconstruction links. |
docs/csharp/fundamentals/patterns/property-positional-patterns.md |
Updates deconstruction links. |
docs/csharp/fundamentals/patterns/snippets/patterns/DeconstructSamples.cs |
Adds consolidated deconstruction samples. |
docs/csharp/fundamentals/patterns/snippets/patterns/Program.cs |
Runs the new samples. |
docs/csharp/fundamentals/tutorials/advanced/pattern-matching.md |
Relocates the toll-calculator tutorial. |
docs/csharp/fundamentals/tutorials/pattern-matching.md |
Adds the canal-lock tutorial. |
docs/csharp/fundamentals/tutorials/snippets/pattern-matching-objects/CanalLock.cs |
Updates the sample namespace. |
docs/csharp/fundamentals/tutorials/snippets/pattern-matching-objects/InterimSteps.cs |
Adds tutorial progression samples. |
docs/csharp/fundamentals/tutorials/snippets/pattern-matching-objects/Program.cs |
Updates the sample namespace. |
docs/csharp/fundamentals/tutorials/snippets/pattern-matching-objects/pattern-matching-objects.csproj |
Updates the root namespace. |
docs/csharp/fundamentals/types/tuples.md |
Updates the deconstruction link. |
docs/csharp/language-reference/builtin-types/value-tuples.md |
Updates the deconstruction link. |
docs/csharp/language-reference/compiler-messages/deconstruction-errors.md |
Updates article links and anchors. |
docs/csharp/language-reference/compiler-messages/tuple-errors.md |
Updates the deconstruction link. |
docs/csharp/language-reference/keywords/method-parameters.md |
Updates the deconstruction link. |
docs/csharp/language-reference/operators/is.md |
Updates the advanced tutorial link. |
docs/csharp/language-reference/operators/patterns.md |
Updates tutorial and deconstruction links. |
docs/csharp/language-reference/operators/switch-expression.md |
Updates the advanced tutorial link. |
docs/csharp/misc/cs0819.md |
Updates deconstruction links and anchors. |
docs/csharp/toc.yml |
Reorganizes pattern articles and tutorials. |
docs/csharp/tour-of-csharp/tutorials/pattern-matching.md |
Updates tutorial destinations. |
docs/csharp/tutorials/patterns-objects.md |
Removes the migrated tutorial. |
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| "source_path_from_root": "/docs/csharp/tutorials/patterns-objects.md", | ||
| "redirect_url": "/dotnet/csharp/fundamentals/tutorials/pattern-matching" |
| description: This advanced tutorial demonstrates how to use pattern matching techniques to create functionality using data and algorithms that are created separately. | ||
| ms.date: 02/25/2022 | ||
| --- | ||
| # Tutorial: Use pattern matching to build type-driven and data-driven algorithms |
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
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Closes #55928 (Everyday C# Phase F, PR 21).
Completes Pattern matching (§11) with no remaining planned core gaps; all moved paths have redirects, and no former functional/ deconstruction path breaks.
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