TODO

• I do achieve 10 patterns at least.
  • Memento or State

FIXME

• Composite(serious crisis, output is difference)
• Visitor(serious crisis, output is difference)

REVIEW

• Singleton Qiita(finish)
• TemplateMethod Qiita(ongoing)
• FactoryMethod Qiita(ongoing)
• Decorator Qiita(ongoing)
• Proxy (output is difference) Qiita(ongoing)
• Adaptor Qiita(ongoing)
• Strategy(output is difference)　Qiita(ongoing)
• Observer(bugy)　Qiita(ongoing)
• Facade Qiita(ongoing)
• Builder Qiita(ongoing)