peterc

# Just because the example in the docs doesn't seem to work outside of a Rails app

require 'ruby_llm'

RubyLLM.configure do |config|
  config.gemini_api_key = ENV['GEMINI_API_KEY']
end

chat = RubyLLM.chat(model: "gemini-2.5-flash-image")
reply = chat.ask("Cyberpunk city street at night, raining, neon signs")

peterc

require "openai"

client = OpenAI::Client.new   # assumes valid key in OPENAI_API_KEY

begin
  resp = client.chat.completions.create(
    model: :"gpt-5-nano",
    reasoning_effort: :high,
    verbosity: :low,
    messages: [{ role: "user", content: "Tell me a joke" }]

peterc

import sys
import requests
import replicate
from Pylette import extract_colors

# YOU NEED A REPLICATE API TOKEN IN 'REPLICATE_API_TOKEN'

prompt = sys.argv[1] if len(sys.argv) > 1 else "sandy beach"

output = replicate.run(

peterc

require "openai"

client = OpenAI::Client.new(
  api_key: ENV.fetch("OPENROUTER_API_KEY"),
  base_url: "https://openrouter.ai/api/v1"
)

models = %w{
  google/gemma-2b-it
  anthropic/claude-sonnet-4

peterc

Make macOS dock instantly appear/disappear: defaults write com.apple.dock autohide-time-modifier -int 0;killall Dock

Truncate an MP3 to 10 minutes: ffmpeg -t 600 -i in.mp3 -acodec copy out.mp3

All the TLDs: http://data.iana.org/TLD/tlds-alpha-by-domain.txt

Poor man's dark mode in CSS: filter: invert(100%) hue-rotate(180deg);

AWS's IP ranges: https://ip-ranges.amazonaws.com/ip-ranges.json

peterc

require 'zlib'
require 'objspace'

# A variant of https://en.wikipedia.org/wiki/Count%E2%80%93min_sketch

class CompactApproximator
  attr_accessor :cells
  
  def initialize(size, hashes, min_elem, join_fn, meet_fn)
    @m, @k = size, hashes

peterc

# Zig Programming Cheat Sheet

This guide condenses the key ideas from Chapter 1 of the Zig book, emphasizing Zig's syntax, semantics, workflows, and philosophy. It distills nuanced language details, technical rules, compiler constraints, and examples for direct application by AI or technical users.

---

## 1. Zig Philosophy and Paradigm

- Zig is a **low-level, general-purpose, modern programming language** designed for safety, control, and simplicity.
- Major design goal: **Less is more** (removes confusing/unsafe C/C++ behaviors; adds consistency).

peterc

JSON Library for Ruby

The JSON library is a comprehensive and robust solution for parsing, generating, and manipulating JSON data in Ruby. It offers full support for JSON encoding and decoding, including extensions for common Ruby types like Date, Time, Complex, Rational, and more. The library also provides advanced features such as extended JSON object creation, custom generators, and parser configurations.

This README provides an overview of usage, advanced options, compatible Ruby types, and important notes for developers who want to integrate JSON handling seamlessly in their Ruby applications.

---

Features

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Hanami is a Ruby framework designed to create software that is well-architected, maintainable and a pleasure to work on.

These guides aim to introduce you to the Hanami framework and demonstrate how its components fit together to produce a coherent app.

To create a Hanami app, you will need Ruby 3.1 or greater. Check your ruby version with `ruby --version`

To install: `gem install hanami`

Hanami provides a hanami new command for generating a new app: `hanami new bookshelf` (where bookshelf is an example app name)

peterc

Basic MCP server for man page lookups

bun init -y
bun add @modelcontextprotocol/sdk
bun add zod
bunx @modelcontextprotocol/inspector bun index.ts # if needed

For my claude_desktop_config.json (change if you're someone else):