eugeneius’s gists

eugeneius / the_old_reader_key_event_handler.js

Created July 7, 2013 01:04

The JavaScript key event handler from http://theoldreader.com/, beautified by http://jsbeautifier.org/. I'm using this to illustrate the problem with keyboard shortcuts described here: http://theoldreader.uservoice.com/forums/187017-feature-requests/suggestions/3743414-keyboard-navigation-doesn-t-work-as-i-d-expect

	trigger: function (e, t) {
	var n, r, i, s, o;
	t == null && (t = {}), Reader.Debug.log("[Shortcuts] trigger " + e);
	if ($(window).width() < 768 && ["j", "k"].indexOf(e) === -1) return !0;
	n = Reader.Contents.container, o = n.hasClass("slide") ? Reader.Contents.offset : n.scrollTop();
	switch (e) {
	case "space":
	return s = n.height() - o, i = n.scrollTop() + s, r = !1, $(".post").each(function (e, t) {
	var u, a;
	if (r) return;

eugeneius / fast_forward_check.sh

Last active January 19, 2017 19:09

Run from a git repo to get stats on how many pull request merges could have been fast-forwarded.

	#!/usr/bin/env bash
	set -ue

	merge_shas="`git rev-list HEAD --merges --grep='^Merge pull request #[0-9]\{1,\} '`"
	merges="`echo "$merge_shas" \| wc -l \| tr -d ' '`"
	fast_forwards=0
	non_fast_forwards=0

	while read -r merge_sha; do
	first_parent="`git rev-list -1 $merge_sha^1`"

eugeneius / xmarks2git.py

Last active February 2, 2018 00:52

Downloads every revision of your Xmarks bookmarks and saves them in a git repository.

	#!/usr/bin/env python

	import argparse
	import getpass
	import json
	import re
	import requests
	import subprocess

	parser = argparse.ArgumentParser()

eugeneius / singleton_class_prepend.rb

Created September 1, 2014 05:32

Demonstrates how the behaviour of include and prepend on a singleton class differs between Ruby 2.0 and 2.1

	module TestModule
	end

	class Included
	class << self
	include TestModule
	end
	end

	class Prepended

eugeneius / post-commit

Created October 19, 2014 02:36

Git post-commit hook that sends an approximation of GitHub's 'push' webhook after every commit. Helpful for testing code that consumes those webhooks.

	#!/usr/bin/env ruby

	# Git post-commit hook that sends an approximation of GitHub's 'push' webhook
	# after every commit. Helpful for testing code that consumes those webhooks.
	#
	# To set this up:
	# 1. Create a local repo where you'll make test commits
	# 2. Copy this script to .git/hooks/post-commit
	# 3. Make it executable: `chmod +x .git/hooks/post-commit`
	# 4. Change the `uri` variable below to where webhooks should be sent

eugeneius / Gemfile_master

Last active October 19, 2018 16:39

Benchmark for schema cache dump changes: https://github.com/rails/rails/pull/17632

	source 'https://rubygems.org'

	gem 'rails', github: 'rails/rails'
	gem 'mysql2'
	gem 'benchmark-ips'

eugeneius / delete_missing_instances_from_hosted_zone.sh

Created March 31, 2015 15:10

If you automatically create Route 53 DNS entries for EC2 instances on boot, and you had a bug that meant they were never removed, this gist is for you.

	#!/bin/bash
	hosted_zone_id=$1
	hostnames=`./get_hostnames_from_hosted_zone.sh "$hosted_zone_id"`

	while read hostname; do
	echo "$hostname"
	instance_id=`./hostname_to_instance_id.sh "$hostname"`
	if [[ -z $instance_id ]]; then
	echo " hostname doesn't contain instance id, skipping."
	else

eugeneius / memoized_attributes_test.rb

Last active November 14, 2015 02:56

Demonstrates a bug in the identity_cache gem: https://github.com/Shopify/identity_cache/issues/246

	require "test_helper"

	class MemoizedAttributesTest < IdentityCache::TestCase
	def test_memoization_should_not_break_dirty_tracking
	item = Item.create!

	IdentityCache.cache.with_memoization do
	Item.fetch(item.id)
	Item.fetch(item.id).title = "my title"
	Item.fetch(item.id).update(title: "my title")

eugeneius / each_char_matching_pattern.rb

Last active November 7, 2016 22:23

Demonstrating how Ruby's lazy enumerators and enum_for work.

	def each_char_matching_pattern(io, pattern)
	return enum_for(:each_char_matching_pattern, io, pattern) unless block_given?

	io.each_line.lazy.select do \|line\|
	line =~ pattern
	end.flat_map do \|line\|
	line.chars
	end.each do \|line\|
	yield line
	puts "\toffset: #{io.pos}"

eugeneius / datadog_pry.rb

Last active February 18, 2017 02:01

Open a Pry session and examine Datadog dashboard and monitors.

	#!/usr/bin/env ruby

	require 'thor'
	require 'dogapi'
	require 'pry'

	class DatadogPry < Thor
	DatadogDashboard = Struct.new(:name, :queries)
	DatadogMonitor = Struct.new(:name, :queries)

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