検索結果

Observable (31.0)

• 2.1.0
• 2.2.0
• 2.3.0
• 2.4.0
• 2.5.0
• 2.6.0
• 2.7.0
• 3.0
• 3.1
• 3.2
• 3.3
• 3.4

• モジュール

Observer パターンを提供するモジュールです。

...### Periodically fetch a stock price.
include Observable

def initialize(symbol)
@symbol = symbol
end

def run
last_price = nil
loop do
price = Price.fetch(@symbol)
print "Current price: #{price}\n"
if price != last_price
cha...

...end
sleep 1
end
end
end

class Price ### A mock class to fetch a stock price (60 - 140).
def self.fetch(symbol)
60 + rand(80)
end
end

class Warner ### An abstract observer of Ticker objects.
def initialize(ticker, limit)
@l...