effects

Design OCaml 5 algebraic effects to separate suspension from errors.

46|6|Updated Jan 28, 2026
One-click install
npx skills add https://github.com/aresbit/MateBot --skill effects
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: effects
Source: https://github.com/aresbit/MateBot/tree/main/skills/ocaml/effects
Command: npx skills add https://github.com/aresbit/MateBot --skill effects

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps OCaml developers design robust control-flow patterns using algebraic effects, separating suspension from errors to create clean, testable code paths.

Core Features & Use Cases

  • Design APIs with effect-based schedulers: structure interactions between components using effects rather than exceptions.
  • Compare effects vs exceptions: evaluate when to suspend versus raise errors in streaming code.
  • Integrate libraries with Eio or affect: enabling effect-aware I/O and concurrency models.
  • Handle suspension vs error cases in streaming code: clear flow control in data pipelines.

Quick Start

Start with a minimal OCaml project configured for OCaml 5. Then implement a simple effect like Block and a handler, and run a small function that uses the effect.

Frequently Asked Questions about effects

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

FAQPage Schema
How do I separate suspension from errors in OCaml 5 algebraic effects?

OCaml 5 algebraic effects separate suspension from errors by using dedicated effect handlers for flow control and scheduling, leaving exceptions strictly for failure cases, which ensures clean functional API design.

What is the best way to design APIs with effect-based schedulers in OCaml?

Designing APIs with effect-based schedulers involves structuring component interactions through algebraic effects rather than exceptions, enabling safer suspension and clearer error management in streaming data pipelines.

How do I handle suspension versus error cases in streaming code with OCaml 5?

Handling suspension versus error cases in OCaml 5 streaming code requires layered effect handlers at the source level, cleanly distinguishing data pipeline flow control from error management.

Can I integrate Eio or affect libraries for effect-aware concurrency in OCaml 5?

Yes, you can integrate Eio or affect libraries for effect-aware concurrency in OCaml 5 by layering effect handling at the source level, enabling effect-aware I/O and robust concurrency models.

When should I use OCaml 5 effects instead of exceptions for control flow?

Use OCaml 5 effects instead of exceptions when suspending execution for scheduling or streaming data, reserving exceptions for true errors to ensure safe control flow and clear separation of concerns.