rociiu

function random_chinese_name() {
    function random(a, l) {
        var x = [];
        x.push(a[Math.ceil(Math.random() * a.length)]);
        while(l > 1) {
            x.push(a[Math.ceil(Math.random() * a.length)]);
            l--;
        }
        return x.join("");
    }

rociiu

# Eller's algorithm for maze generation. Novel in that it only requires memory
# proportional to the size of a single row; this means you can generate
# "bottomless" mazes with it, that just keep going and going and going, using
# constant memory!

class State
  attr_reader :width

  def initialize(width, next_set=-1)
    @width = width

rociiu

# Recursive backtracking algorithm for maze generation. Requires that
# the entire maze be stored in memory, but is quite fast, easy to
# learn and implement, and (with a few tweaks) gives fairly good mazes.
# Can also be customized in a variety of ways.

DIRS     = (N, S, E, W = 1, 2, 4, 8)
DX       = { E => 1, W => -1, N =>  0, S => 0 }
DY       = { E => 0, W =>  0, N => -1, S => 1 }
OPPOSITE = { E => W, W =>  E, N =>  S, S => N }

rociiu

# --------------------------------------------------------------------
# An implementation of Kruskal's algorithm for generating mazes.
# Fairly expensive, memory-wise, as it requires memory proportional
# to the size of the entire maze, and it's not the fastest of the
# algorithms (what with all the set and edge management is has to
# do). Also, the mazes it generates tend to have a lot of very short
# dead-ends, giving the maze a kind of "spiky" look.
# --------------------------------------------------------------------

# --------------------------------------------------------------------

rociiu

Rails 開發注意要點

About Ruby Syntax

• 編輯器設定 soft tab (space=2)，以 2 格空白符號做為程式內縮距離（不分語言）。
• 函式如果只有一個參數，就不強制打()
• 函式如果有二個以上的參數，通通都要有 ()
  • (避免發生奇怪的paser bug跟保持專案一致性)
• 字串限定用雙引號包覆
• 善用 "#{str1} #{str3} " 等字串改寫技巧取代不需要的字串加法。

rociiu

<!-- layout file -->
<% if current_user %>
  Welcome <%= current_user.username %>. Not you? <%= link_to "Log out", logout_path %>
<% else %>
  <%= link_to "Sign up", signup_path %> or <%= link_to "log in", login_path %>.
<% end %>

rociiu

require "erb"
require "ostruct"
require "optparse"

options = {}
OptionParser.new do |opts|
  opts.banner = <<-DESC
  Usage:
    ruby resume.rb [options]

rociiu

These are some of my (Ryan Bates) favorite gems to use for various tasks:

• JavaScript: jQuery with jquery-rails
• Pagination: Kaminari
• Testing: RSpec, Cucumber and Capybara
• Factories: Factory Girl
• Authentication: Nifty Generators and Omniauth
• Authorization: CanCan
• File Attachments: Carrierwave
• HTML/XML Parsing: Nokogiri

rociiu

(function(w, d) {
  // Empty path to CSS file
  // to determine later on.
  var path;

  // Create empty: <link rel="stylesheet" id="adaptive_css" />
  var css = d.createElement('link');
  css.rel = 'stylesheet';
  css.id = 'adaptive_css';

rociiu

function set_window_and_tab_title
{
    local title="$1"
    if [[ -z "$title" ]]; then
        title="root"
    fi

    local tmpdir=~/Library/Caches/${FUNCNAME}_temp
    local cmdfile="$tmpdir/$title"