xiaohui-zhangxh

def combine(arr, size)
  return [] if size > arr.size || size <= 0
  return [arr] if size == arr.size
  return arr.map{|item| [item]} if size == 1
  last = arr[-1]
  left = arr[0..-2]
  a = combine(left, size - 1).map{|item| item + [last]}
  b = combine(left, size)
  return a + b
end

xiaohui-zhangxh

=begin
** Install required packages
sudo apt-get install xvfb # fake X server
sudo apt-get install xfonts-base xfonts-75dpi xfonts-100dpi # fonts
sudo apt-get install iceweasel # this is firefox
=end

require 'headless'
require 'selenium-webdriver'
require 'webdriver-user-agent'

xiaohui-zhangxh

load 'deploy' unless defined?(_cset)

_cset :asset_env, "RAILS_GROUPS=assets"
_cset :assets_prefix, "assets"
_cset :assets_role, [:web]

_cset :normalize_asset_timestamps, false

before 'deploy:finalize_update', 'deploy:mm_assets:symlink'
after 'deploy:update_code', 'deploy:mm_assets:precompile'

xiaohui-zhangxh

#!/bin/bash

PING_COUNT=10
INFO_LOG=/var/log/ups_monitor.log
ERROR_LOG=/var/log/ups_monitor.err
STATUS_LOG=/tmp/ups_monitor.log
SHUTDOWN_LOG=/var/log/ups_monitor_shutdown.log
LOCKER=/tmp/ups_monitor.lock
SHUTDOWN_COUNTER=5

xiaohui-zhangxh

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

xiaohui-zhangxh

#
# This is a simple rackup file for geminabox. It allows simple role-based authorization.
#
# roles:
# - developer
# - upload
# - delete
# - admin (can do anything)
#
# For example, a developer who can access the service and upload new gems would have the following roles: `%w(developer upload)

xiaohui-zhangxh

# frozen_string_literal: true

require 'json'
require 'net/http'

class DnspodAPI
  API_HOST = 'https://dnsapi.cn'

  # API requires UserAgent contains app name/version and email
  def initialize(token, app_name:, app_version:, email:)

xiaohui-zhangxh

new features

• css improved
• css transitions added

nodes

• double click on a node to remove it

xiaohui-zhangxh

Capybara

save_and_open_page

Matchers

have_button(locator)

xiaohui-zhangxh

# frozen_string_literal: true

require 'json'
require 'net/http'
require 'digest'

class UcloudAPI
  API_HOST = 'https://api.ucloud.cn'

  def initialize(public_key, private_key)