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pfw-identified-collections

Access Swift collection elements with O(1) ID-based lookups using IdentifiedCollections.

Updated Aug 23, 2026
Search Tags:#performance#swift#data structures#collections#swiftui#identifiedarray
One-click install
npx skills add https://github.com/Mp2025-cmd/ScrollKitty --skill pfw-identified-collections
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: pfw-identified-collections
Source: https://github.com/Mp2025-cmd/ScrollKitty/tree/main/.claude/skills/pfw-IdentifiedCollections
Command: npx skills add https://github.com/Mp2025-cmd/ScrollKitty --skill pfw-identified-collections

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the performance bottleneck of searching for elements within collections by providing efficient, O(1) lookup capabilities using unique identifiers.

Core Features & Use Cases

  • Efficient Data Management: Store identifiable elements in a collection for rapid access via their IDs.
  • Performance Improvement: Enhance the responsiveness of SwiftUI views and observable models that rely on collections of state.
  • Use Case: Managing a list of users in an application where you frequently need to find, update, or delete a user based on their unique user ID.

Quick Start

Import IdentifiedCollections and construct an identified array of users.

Frequently Asked Questions about pfw-identified-collections

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I perform O(1) lookups for elements in a Swift collection?▼

To perform O(1) lookups for elements in a Swift collection, use the IdentifiedCollections library to store identifiable elements and access them rapidly via their unique IDs. This optimizes state management and retrieval.

What is the best way to manage SwiftUI state for lists requiring frequent ID-based updates?▼

The best way to manage SwiftUI state for frequent ID-based updates is using an IdentifiedArray. It provides ergonomic and performant O(1) retrieval, removal, and iteration over identifiable elements.

Do I need the swift-identified-collections package to use O(1) ID lookups in Swift?▼

Yes, you need the swift-identified-collections package dependency to use O(1) ID lookups. This Skill requires the package to construct identified arrays for efficient data management.

How does IdentifiedArray improve performance for observable models in Swift?▼

IdentifiedArray improves performance for observable models by enabling O(1) retrieval, removal, and iteration over identifiable elements. This eliminates the linear search bottleneck of standard Swift collections.

Can I use IdentifiedCollections to manage a list of users by their unique user ID?▼

Yes, you can use IdentifiedCollections to manage a list of users by their unique user ID. It allows you to efficiently find, update, or delete a specific user within the collection using O(1) lookups.

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