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Designing .NET types for performance v1.0.0

Use this resource to design performant .NET types and suitable collections

New

  • 597 downloads
  • 168 likes
  • 102 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install dotnet-type-design-performance

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent seals classes by default, turns small immutable types into readonly structs and returns immutable collections at API boundaries. It also distinguishes Task from ValueTask and explains the Span and Memory patterns for bytes.

Mostly picked by

Updated November 2, 2026

Card for the “Designing .NET types for performance” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: principles and choosing between class, struct and record
  • SKILL.md: deferred enumeration, Task versus ValueTask and Span

Good fit for

  • You create a new type used in a hot loop.
  • An API returns mutable collections by mistake.

Not for

    Tags

    • dotnet
    • performance
    • struct
    • collections

    About

    You say

    “Review the types in this module and tell me which classes to seal or turn into structs.”

    Card for the “Designing .NET types for performance” skill

    Skill published by aaronontheweb under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to design performant .NET types and suitable collections
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md10.2 KB

    Origin and licence

    Listed unmodified

    Author
    aaronontheweb
    Source
    github.com/aaronontheweb/dotnet-skills/tree/5ca5db8cf25566f19d2a5dc53204d4af22b23a0d/skills/csharp-type-design-performance
    Licence
    MIT

    Notice

    « type-design-performance » (aaronontheweb, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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