Choosing Derivedstateof

Q: What is a Claude Code skill and how does the Choosing Derivedstateof skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Choosing Derivedstateof is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Dev Tools · Sub-category: tools-misc · Last updated: 2026-05-27

Use this skill to decide when Jetpack Compose derivedStateOf is the right tool and when it is pure overhead. Covers the "input frequency must exceed output frequency" rule, the mandatory remember { derivedStateOf { } } wrapper, the canonical pitfall of capturing non-state variables by initial value (and the remember(key) fix), and the snapshotFlow alternative for fire-and-forget side effects on derived values. Use when the developer mentions derivedStateOf, scroll-position-driven booleans, threshold checks, firstVisibleItemIndex, "show FAB on scroll", recomposition counts that don't drop after wrapping a value, or asks whether a computed string concatenation should use derivedStateOf.

About this skill (catalog notes)

Choosing Derivedstateof includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); a dedicated installation section; pricing or quota commentary. The SKILL.md runs to about 1,481 words, in the catalog's typical mid-range.

License: Apache-2.0
Original author: skydoves
Indexed lastmod: 2026-05-27
Catalog position: Dev Tools · tools-misc
Indexed related skills: 10

How Choosing Derivedstateof fits the catalog

Choosing Derivedstateof sits in the Dev Tools category under the tools-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

derivedStateOf produces a State whose readers only invalidate when the derived result changes, even if the input states change far more often. Use it when input frequency exceeds output frequency. Use it for any other shape and it is pure overhead — an extra snapshot subscription with no filtering benefit. This skill teaches Claude when to reach for it, when to refuse, and how to avoid the canonical capture-by-initial-value pitfall.

What this skill does

Choosing Derivedstateof is a community-contributed Claude Code skill in the tools-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/choosing-derivedstateof/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the developer mentions derivedStateOf, scroll-position-driven booleans, threshold checks, firstVisibleItemIndex, "show FAB on scroll", recomposition counts that don't drop after wrapping a value, or asks whether a computed string concatenation should use derivedStateOf.

Who uses this skill

The Choosing Derivedstateof Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/choosing-derivedstateof
curl -L https://claudskills.com/skills/choosing-derivedstateof/SKILL.md \
  -o ~/.claude/skills/choosing-derivedstateof/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/choosing-derivedstateof/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/choosing-derivedstateof/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\choosing-derivedstateof\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Choosing Derivedstateof Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/choosing-derivedstateof/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Choosing Derivedstateof skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Choosing Derivedstateof skill?

Use Choosing Derivedstateof when your Claude Code task falls under the Dev Tools category — specifically in the tools misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Choosing Derivedstateof" or describe the task and let Claude pick). Browse related skills at /category/tools/.

What is a Claude Code skill and how does the Choosing Derivedstateof skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Choosing Derivedstateof is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/skydoves/compose-performance-skills/blob/HEAD/recomposition/choosing-derivedstateof/SKILL.md
License: Apache-2.0
Author: skydoves

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

skydoves. (2026). Choosing Derivedstateof [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/choosing-derivedstateof/

BibTeX

@misc{choosing-derivedstateof-2026,
  author    = {skydoves},
  title     = {Choosing Derivedstateof [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/choosing-derivedstateof/}
}

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