jimytc

/* 前言 -------------------------------------------------- */

簡介

這是 Jeremy 於 2026-03-07 於第二屆「 AI 取暖會」中分享過去十八個月來與 AI/Agent 搏鬥的實戰心得。

影片

https://www.youtube.com/watch?v=9kb7oCamafE

jimytc

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

jimytc

# Rails production setup via SQLite3 made durable by https://litestream.io/ 
# Copy this to Dockerfile on a fresh rails app. Deploy to fly.io or any other container engine. 
#
#  try locally: docker build . -t rails && docker run -p3000:3000 -it rails
#
#  in production you might want to map /data to somewhere on the host, 
#  but you don't have to!
# 
FROM ruby:3.0.2

jimytc

# frozen_string_literal: true

source 'https://rubygems.org'

gem 'activesupport'
gem 'minitest'
gem 'minitest-reporters', '>= 0.5.0'
gem 'rr'
gem 'rubocop'

jimytc

#!/bin/sh
# if you're using ZSH, change the shebang above to "#!/bin/zsh -i"

if [ ${#} -ne 2 ]; then
  echo >&2 Usage: $(basename ${0}) old-version new-version
  exit 1
fi

home_path=$(cd ~; pwd -P)
old_version=${1}

jimytc

class Pen
  include Comparable
  attr :serialNumber, :length

  def initialize(serialNumber, length)
    @serialNumber = serialNumber
    @length = length
  end

  def to_s

jimytc

import java.util.ArrayList;
import java.util.Collections;

public class Pen implements Comparable<Pen> {

  private String serialNumber;
  private int length;

  public Pen(String serialNumber, int length) {
    this.serialNumber = serialNumber;

jimytc

# Regular way
(1..1_000_000_000).select(&:even?)
                  .map { |i| i**2 }
                  .first(10)

# Lazy way
(1..1_000_000_000).lazy
                  .select(&:even?)
                  .map { |i| i**2 }
                  .first(10)

jimytc

ActiveRecord::Schema.define do
  create_table :posts do |table|
    table.string :title
    table.string :content
  end
end

class Post < ActiveRecord::Base
end

jimytc

irb(main):023:0> uri = URI('http://www.google.com')
=> #<URI::HTTP http://www.google.com>
irb(main):059:0> Net::HTTP.get(uri)
D, [2018-08-13T22:33:30.030400 #19738] DEBUG -- : [httplog] Connecting: www.google.com:80
D, [2018-08-13T22:33:30.055285 #19738] DEBUG -- : [httplog] Sending: GET http://www.google.com:80/
D, [2018-08-13T22:33:30.055377 #19738] DEBUG -- : [httplog] Header: accept-encoding: gzip;q=1.0,deflate;q=0.6,identity;q=0.3
D, [2018-08-13T22:33:30.055412 #19738] DEBUG -- : [httplog] Header: accept: */*
D, [2018-08-13T22:33:30.055579 #19738] DEBUG -- : [httplog] Header: user-agent: Ruby
D, [2018-08-13T22:33:30.055605 #19738] DEBUG -- : [httplog] Header: host: www.google.com
D, [2018-08-13T22:33:30.055646 #19738] DEBUG -- : [httplog] Data: