상상할 수 있는 힘이 모자라다

If you are reasonable rails developer, you are so familiar with " &:symbol ". Have you thought how it work?Start with '&' operator. If you pass something with '&' to method, ruby think t...

I think Proc is good for factory pattern. Of course, if the concrete product needs subclassing or anything else that real class is needed, we have to code class for concrete product. However, if it ...