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@jediahkatz
jediahkatz / SKILL.md
Created January 23, 2026 20:25
Cursor skill for capturing learnings from conversations into reusable skills
name description
capture-skill
Capture learnings, patterns, or workflows from the current conversation into a new or existing skill. Use when the user wants to save what was learned, discovered, or built during a conversation as a reusable skill for future sessions.

Capture Skill from Conversation

This skill helps you extract knowledge, patterns, and workflows from the current conversation and persist them as a reusable skill.

When to Use

@steipete
steipete / agent.md
Created October 14, 2025 14:41
Agent rules for git
  • Delete unused or obsolete files when your changes make them irrelevant (refactors, feature removals, etc.), and revert files only when the change is yours or explicitly requested. If a git operation leaves you unsure about other agents' in-flight work, stop and coordinate instead of deleting.
  • Before attempting to delete a file to resolve a local type/lint failure, stop and ask the user. Other agents are often editing adjacent files; deleting their work to silence an error is never acceptable without explicit approval.
  • NEVER edit .env or any environment variable files—only the user may change them.
  • Coordinate with other agents before removing their in-progress edits—don't revert or delete work you didn't author unless everyone agrees.
  • Moving/renaming and restoring files is allowed.
  • ABSOLUTELY NEVER run destructive git operations (e.g., git reset --hard, rm, git checkout/git restore to an older commit) unless the user gives an explicit, written instruction in this conversation. Treat t
@getify
getify / simplest-monad.js
Last active July 20, 2022 19:18
what's the simplest monad implementation we could express in JS?
function Identity(v) {
return { val: v };
}
function chain(m,fn) {
return fn(m.val);
}
// ^^^ that's it!
@cameel
cameel / solidity-enums-with-data.md
Last active September 5, 2024 13:11
Enums with data in Solidity

Use cases

  • Optional/nullable data types.
  • Variant data types.
  • Flag with extra information needed only in some cases (or different in different cases).
  • Modeling states in a state machine where each state can have some data associated with it.
  • List of operations for batch processing, where each operation can have its own arguments.
  • Alternative to function overloading that allows avoiding combinatorial explosion when there are multiple parameters that need variants.
  • Nested data structures with heterogenous nodes.

Syntax and semantics

@dhh
dhh / Gemfile
Created June 24, 2020 22:23
HEY's Gemfile
ruby '2.7.1'
gem 'rails', github: 'rails/rails'
gem 'tzinfo-data', '>= 1.2016.7' # Don't rely on OSX/Linux timezone data
# Action Text
gem 'actiontext', github: 'basecamp/actiontext', ref: 'okra'
gem 'okra', github: 'basecamp/okra'
# Drivers
@junkblocker
junkblocker / disable.sh
Last active April 17, 2024 21:33
Disable bunch of #$!@ in Catalina
#!/bin/bash
############################################################################################
# WARNING: THESE SCRIPTS AND CHANGES ARE NOT MEANT FOR ANYBODY BUT ME.
# RUNNING THESE WILL MESS UP YOUR COMPUTER IN MYSTERIOUS AND USUALLY UNRECOVERABLE WAYS.
############################################################################################
if [[ "$(sw_vers -productVersion)" != 10\.15* ]]; then
echo "This is only meant to run on macOS 10.15.* Catalina" >&2
exit 1
@vmcilwain
vmcilwain / rails_6_0_alpha.txt
Last active November 26, 2021 21:42
Steps to install rails 6.0 alpha
Pre reqs:
I installed these using homebrew
* nodejs
* yarn
Create an application directory manually
$ mkdir app_name
@Yousha
Yousha / .gitignore
Last active February 5, 2026 16:17
.gitignore for C/C++ developers.
##### Windows
# Windows thumbnail cache files
Thumbs.db
Thumbs.db:encryptable
ehthumbs.db
ehthumbs_vista.db
# Dump file
*.stackdump
require "active_support"
require "active_support/core_ext/string/output_safety"
require "objspace"
def assert_same_object(x, y)
raise unless x.object_id == y.object_id
end
def assert_not_same_object(x, y)
raise unless x.object_id != y.object_id
#!/usr/bin/sudo ruby
#
# revealer.rb -- Deobfuscate GHE .rb files.
#
# This is simple:
# Every obfuscated file in the GHE VM contains the following code:
#
# > require "ruby_concealer.so"
# > __ruby_concealer__ "..."