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@tansengming
tansengming / configure.rb
Created July 9, 2012 07:37
Ruby configure blocks
# How Clearance / Hoptoad does it
module Clearance
class << self
attr_accessor :configuration
end
def self.configure
self.configuration ||= Configuration.new
yield(configuration)
end
@yaraki
yaraki / dijkstra.rb
Created February 3, 2012 13:58
Dijkstra Shortest Path Algorithm in Ruby
#!/usr/bin/ruby1.9.1 -Kw
# -*- coding: utf-8 -*-
class Edge
attr_accessor :src, :dst, :length
def initialize(src, dst, length = 1)
@src = src
@dst = dst
@length = length
@sumskyi
sumskyi / README.md
Last active June 7, 2022 18:49
rails STI with custom "type" field and storing there value different from ClassName

GeoEntity.last

SELECT geo_entities.* FROM geo_entities ORDER BY geo_entities.id DESC LIMIT 1

returns:

County id: 4, eid: nil, pid: nil, ename: nil, etype: 2, created_at: "2011-11-21 06:26:37", updated_at: "2011-11-21 06:26:37"

@bkimble
bkimble / gist:1365005
Last active May 2, 2024 01:27
List local memcached keys using Ruby
#!/usr/bin/env ruby
# List all keys stored in memcache.
# Credit to Graham King at http://www.darkcoding.net/software/memcached-list-all-keys/ for the original article on how to get the data from memcache in the first place.
require 'net/telnet'
headings = %w(id expires bytes cache_key)
rows = []
@3dd13
3dd13 / ruby_ftp_example.rb
Created November 5, 2011 17:08
Sample code of using Ruby Net::FTP library. Login to FTP server, list out files, check directory existence, upload files
require 'net/ftp'
CONTENT_SERVER_DOMAIN_NAME = "one-of-the-ftp-server.thought-sauce.com.hk"
CONTENT_SERVER_FTP_LOGIN = "saucy-ftp-server-login"
CONTENT_SERVER_FTP_PASSWORD = "saucy-ftp-server-password"
# LOGIN and LIST available files at default home directory
Net::FTP.open(CONTENT_SERVER_DOMAIN_NAME, CONTENT_SERVER_FTP_LOGIN, CONTENT_SERVER_FTP_PASSWORD) do |ftp|
files = ftp.list
@clintel
clintel / gist:1155906
Created August 19, 2011 02:40
Fenced code in bullet lists with GitHub-flavoured MarkDown??

Fenced code blocks inside ordered and unordered lists

  1. This is a numbered list.

  2. I'm going to include a fenced code block as part of this bullet:

    Code
    More Code
    
@erichurst
erichurst / database.yml.example mysql2
Created May 9, 2011 02:58
Rails 3 database.yml examples
# MySQL. Versions 4.1 and 5.0 are recommended.
#
# Install the MySQL driver:
# gem install mysql2
#
# And be sure to use new-style password hashing:
# http://dev.mysql.com/doc/refman/5.0/en/old-client.html
development:
adapter: mysql2
encoding: utf8
@tansengming
tansengming / define_method.rb
Created November 3, 2009 02:55
some notes to help me with define_method
# here lies some notes to help me with define_method
class MetaTest
define_method(:meta_1) do
puts 'm.meta_1'
end
def initialize
@a_var = 'iable'
end