design_patterns-catgut_string

Create pool-backed mutable Go strings with copy-detection and buffer reuse.

2|Updated Jun 26, 2025

Search Tags:#performance #go #pool #string #mutable #catgut #copy-detection

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npx skills add https://github.com/amarbel-llc/dodder --skill design-patterns-catgut-string

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: design_patterns-catgut_string
Source: https://github.com/amarbel-llc/dodder/tree/main/.claude/skills/design_patterns-catgut_string
Command: npx skills add https://github.com/amarbel-llc/dodder --skill design-patterns-catgut-string

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Go strings are immutable and allocations can blow up in hot paths; catgut.String provides a pool-backed mutable alternative with copy-detection safeguards.

Core Features & Use Cases

Pooling via GetPool().GetWithRepool() to reuse buffers across operations.
Mutable buffer-backed string with Reset() to avoid reallocations.
Copy-detection to panic on accidental value copies in debug builds.
Flexible I/O via Write, WriteTo, and ReadFrom for hot-path manipulation.
Typical use on parsing identifiers, tags, and other performance-critical string handling.

Quick Start

Create a pooled catgut.String, set its value, and reuse it across iterations with Reset to minimize allocations.

Frequently Asked Questions about design_patterns-catgut_string

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

FAQPage Schema

How do I reduce string allocations in Go hot paths?▼

To reduce string allocations in Go hot paths, use a pool-backed mutable string type that reuses buffers via Reset operations in tight parsing loops. This approach prevents excessive memory allocation when handling identifiers or tags by recycling buffer memory across iterations.

What is copy-detection in mutable Go strings?▼

Copy-detection in mutable Go strings is a safeguard mechanism that panics in debug builds when a mutable string value is accidentally copied by value. It ensures safe pool-backed buffer handling by catching unintended value semantics during development before they cause silent data corruption.

How do I reuse string buffers across parsing iterations in Go?▼

You reuse string buffers across parsing iterations in Go by acquiring a string from a pool with GetPool, setting its value, and calling Reset at the start of each loop. This pattern avoids reallocations and minimizes garbage collection pressure in performance-critical hot paths.

Can I use pool-backed strings for parsing identifiers and tags in Go?▼

Yes, you can use pool-backed mutable strings for parsing identifiers and tags in Go. They are specifically designed for performance-critical string handling, utilizing GetPool and Write operations to enable safe buffer reuse and prevent copies in tight parsing loops.

What are the limitations of using mutable strings in Go?▼

The main limitation of using mutable strings in Go is the strict copy-detection enforcement, which panics if the value is accidentally copied. You must carefully manage pool acquisition and Reset cycles to avoid panics in debug builds and ensure buffers are not used after release.