RussOlsenStrategyMethod
- template55.rb 元のやつ
- strategy72.rb HTMLだけ
- strategy72-1.rb Raiseも含めて
- strategy76.rb 基底クラスを削除
- strategy82.rb さらにclassもいらない．．．
template55.rb 元のやつ
def initialize
@title = '月次報告'
@text = ['順調','さいこ〜〜〜']
end
def output_report
puts '<html>'
puts ' <head>'
puts ' <meta charset="UTF-8">'
puts " <title>#{@title}</title>"
puts ' </head>'
puts ' <body>'
@text.each{|line|
puts(" <p>#{line}</p>")
}
puts ' </body>'
puts '</html>'
end
end
report = Report.new
report.output_reportstrategy72.rb HTMLだけ
class Report
attr_reader :title, :text
attr_accessor :formatter
def initialize(formatter)
@title = '月次報告'
@text = ['順調','さいこ〜〜〜']
@fomatter = formatter
end
def output_report
@fomatter.output_report(@title, @text)
end
end
class Formatter
def output_report(title,text)
raise 'Abstract method called.'
end
end
class HTMLFormatter < Formatter
def output_report(title,text)
puts '<html>'
puts ' <head>'
puts ' <meta charset="UTF-8">'
puts " <title>#{title}</title>"
puts ' </head>'
puts ' <body>'
text.each{|line|
puts(" <p>#{line}</p>")
}
puts ' </body>'
puts '</html>'
end
end
report = Report.new(HTMLFormatter.new)
report.output_reportstrategy72-1.rb Raiseも含めて
strategy76.rb 基底クラスを削除
class Report
attr_reader :title, :text
attr_accessor :formatter
def initialize(formatter)
@title = '月次報告'
@text = ['順調','さいこ〜〜〜']
@fomatter = formatter
end
def output_report
@fomatter.output_report(self)
end
end
class HTMLFormatter
def output_report(context)
puts '<html>'
puts ' <head>'
puts ' <meta charset="UTF-8">'
puts " <title>#{context.title}</title>"
puts ' </head>'
puts ' <body>'
context.text.each{|line|
puts(" <p>#{line}</p>")
}
puts ' </body>'
puts '</html>'
end
end
class PlainTextFormatter
def output_report(context)
puts " ***#{context.title}***"
context.text.each{|line|
puts(" #{line}\n")
}
end
end
report = Report.new(HTMLFormatter.new)
report.output_report
report = Report.new(PlainTextFormatter.new)
report.output_reportstrategy82.rb さらにclassもいらない．．．
class Report
attr_reader :title, :text
attr_accessor :formatter
def initialize(&formatter)
@title = '月次報告'
@text = ['順調','さいこ〜〜〜']
@formatter = formatter
end
def output_report
@formatter.call( self )
end
end
HTMLFormatter = lambda do |context|
puts '<html>'
puts ' <head>'
puts ' <meta charset="UTF-8">'
puts " <title>#{context.title}</title>"
puts ' </head>'
puts ' <body>'
context.text.each{|line|
puts(" <p>#{line}</p>")
}
puts ' </body>'
puts '</html>'
end
report = Report.new &HTMLFormatter
report.output_report
#report = Report.new &PlainTextFormatter
report2 = Report.new do|context|
puts " ***#{context.title}***"
context.text.each{|line|
puts(" #{line}\n")
}
end
report2.output_report
Keyword(s):
References:[MultiScale14]