
Mutable (Grade A)Security-tested data-ai skill for Claude AI. Grade A. Avoid mutable variables like IORef, STRef, and ST in Haskell and prefer immutable records. Use STM variables such as TVar for thread communication
Overview
Key features
- Immutable record recommendations
- STM variable usage guidelines
- Avoidance of IORef, STRef, and ST
Pricing
- Model
- Free
- Category
- Skills
- Rating
- No reviews yet
Use cases
Haskell Code Review
Use Mutable to review Haskell code and ensure it follows best practices for mutable variable usage and concurrent programming.
Concurrent Programming in Haskell
Use Mutable to guide the implementation of concurrent Haskell code, ensuring safe and efficient use of mutable variables and thread communication.
Pros & Cons
Pros
- Encourages best practices for mutable variable usage in Haskell
- Helps prevent common pitfalls in concurrent programming
- Provides clear guidelines for thread communication
Cons
- Limited to Haskell-specific advice
- May not cover all edge cases or complex scenarios
Reviews
Sign in to leave a review.
No reviews yet. Be the first!
Q&A
What’s included in initial troubleshooting?
For initial troubleshooting, the assigned Premium Support Engineer or Customer Reliability Engineer will review and acknowledge your ticket. They may request additional information such as screenshots, error messages, log files, diagnostics files, support bundles, or command output, and may collaborate with other support staff, engineering, or the regional incident commander. If a callback was requested, they will determine if screen sharing is the most effective way to drive ticket resolution and invite you to join a session.
Asked by Noelia Campos · Nov 29, 2025
What are the limitations?
Mutable is limited to Haskell-specific advice and may not cover all edge cases or complex scenarios.
Asked by Lena Fischer · Nov 13, 2025
What are the key features?
Immutable record recommendations, STM variable usage guidelines, and avoidance of IORef, STRef, and ST are the key features of Mutable.
Asked by Tobias Hartmann · Nov 11, 2025
What is crisis prevention?
Crisis prevention allows GitHub Enterprise Server customers to prepare for—and experience—an incident without risk. Your Customer Reliability Engineer (CRE) guides your team through an incident simulation in a safe, controlled environment. Crisis Prevention consists of up to four sessions covering reliability best practices, incident preparation, and efficient interaction with GitHub Support. After the simulation, your CRE runs a detailed retrospective, uncovering lessons learned and improvement suggestions.
Asked by Lindiwe Mahlangu · Nov 11, 2025
How long does GitHub Premium Support take?
GitHub Premium Support and GitHub Premium Plus Support customers have service‑level agreements (SLAs) for initial response. For urgent priority tickets, the initial response SLA guarantees a 30‑minute response time, which includes troubleshooting. For high‑priority tickets, the SLA provides a four‑hour response. Resolution times are not estimated because ticket complexity varies, but we review metrics regularly and aim to reduce times.
Asked by Qiu Yan · Nov 8, 2025
Ask a question
Skills alternatives
Manage Headers (Grade A)
Skills
Security-tested development skill for Claude AI. Grade A. Inspects and configures the security headers a Power Pages site sends to browsers — Content Security Policy, frame and clickjacking protection
Using Git Worktrees (Grade A)
Skills
Security-tested data-ai skill for Claude AI. Grade A. Use when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git worktre
Ga4 Bigquery Schema (Grade A)
Skills
Security-tested data-ai skill for Claude AI. Grade A. GA4 BigQuery Export Schema Reference — complete field reference, nested structures, query patterns, and performance tips
Meta Capi (Grade A)
Skills
Security-tested data-ai skill for Claude AI. Grade A. Meta Conversions API (CAPI) Setup Reference — architecture, event types, customer information hashing, deduplication, implementation examples, AEM
Callees (Grade A)
Skills
Security-tested development skill for Claude AI. Grade A. Lista o que uma funcao/metodo chama (call graph direto)
Test Module Name (Grade A)
Skills
Security-tested data-ai skill for Claude AI. Grade A. Name Haskell test modules after the module under test with a Spec suffix in the same namespace. Use when writing or reviewing Haskell test module
Board Of Directors (Grade A)
Skills
Security-tested data-ai skill for Claude AI. Grade A. Simulate a 5-member expert board deliberation for major decisions. Use when evaluating plans, architecture choices, feature designs, or any decisi
Advpl Mvc Avancado (Grade A)
Skills
Security-tested development skill for Claude AI. Grade A. MVC avançado via PE (Pontos de Entrada) — adicionar grids customizadas em telas MVC padrão (CNTA300/MATA070/MATA440/MATA460/FINA040 via *STRU)
Trending now
Reducto AI
AI Agent Development Platforms
Document intelligence API that parses, splits, OCRs, and extracts structured data from complex PDFs, slides, and spreadsheets.
AdCrier
Marketing & Advertising
Sponsored answers, paid per click.
Biology AI
Education AI
Accurate Homework Help with Full Explanations
Pin AI
Workflow automation
Agentic AI recruiter that automates sourcing, screening, and outreach to accelerate hiring.




