rociiu

require 'rubygems'
require 'hotcocoa'
require 'net/http'

# Replace the following code with your own hotcocoa code

class Application

  include HotCocoa
  

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

class String
  
  # "Opportunity Type" => "opportunity_type"
  # "Sub-segments"     => "sub_segments"
  def unhumanize
    words = self.dup
    words.downcase!.gsub!(/[ +|-]/, '_')
    words
  end
  

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

require 'net/http'
http = Hash.new{|h,k| h[k] = Net::HTTP.get_response(URI(k)).body }
http['http://www.google.com'] # makes a request
http['http://www.google.com'] # returns cached value

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

require 'rubygems'
require 'OSM'
require 'OSM/StreamParser'
require 'OSM/Database'


class CustomCallback < OSM::Callbacks

  def node(node)
    @node = node

rociiu

for i in {0..99}; do 
    wget `printf "http://downloads.cloudmade.com/north_america/north_america.osm.bz2.part.%02d" ${i};`
done