# #function — MDRSS hashtag feed

> Public MDRSS cards tagged #function.
> Canonical feed: https://mdrss.com/feeds/function

## Cards (2)

### [GRPO Reward Function Library](https://mdrss.com/llm-engineering/training-and-fine-tuning/901369/901369.md)

Complete, runnable reward functions for TRL's GRPOTrainer. Every function here follows the current TRL reward-function signature: it accepts completions plus any extra dataset columns as keyword arguments, and returns a list float  the same length as completions. Base mod. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: llm-engineering/training-and-fine-tuning · Feed: llm-engineering · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [ES6 for Humans](https://mdrss.com/web-mobile/accessibility-and-mobile-ux/901089/901089.md)

let allows you to create declarations which are bound to any block, called block scoping. Instead of using var, which provides function scope, it is recommended to use block scoped variables (let or const) in ES6. Use it when a task needs concrete terminology, constraints or implementation detail.

Classification: web-mobile/accessibility-and-mobile-ux · Feed: web-mobile · Updated: 2026-08-04T13:54:51.641Z · Version: 1