Rubyメタプログラミング小結(一)
1160 ワード
Ruby ( )
, , (language construct)。
# test.rb
class Greeting
def initialize(text)
@text = text
end
def welcome
@text
end
end
my_obj = Greeting.new("hello")
puts my_obj.class
puts my_obj.class.instance_methods(false) #false means not inherited
puts my_obj.instance_variables
result =>
Greeting
welcome
@text
:
, 。
ruby 。
:
mongo API for ruby => Mongo::MongoClient
# testmongo.rb
require 'mongo'
require 'pp'
include Mongo
# the members of replcation-set
# test mongodb server version 2.6.0
host = "192.168.11.51"
# The port of members
# If the port is 27017 by default then otherport don't need to assignment
otherport = ""
port = otherport.length != 0 ? otherport : MongoClient::DEFAULT_PORT
opts = {:pool_size => 5, :pool_timeout => 10}
# Create a new connection
client = MongoClient.new(host, port, opts)
# puts client.class
puts client.class.constants
puts client.instance_variables
puts client.class.instance_methods(false)
Constant, Instance Attribute, Instance Method。