I’ve been working on a class that’s pulling information from an API and wanted to create dynamic attributes from a hash(json).

I came across this link:

http://pullmonkey.com/2008/01/06/convert-a-ruby-hash-into-a-class-object

It works pretty well, but I haven’t done much benchmarking. I’ve read in the past that define_method can be slow and has memory leaks.

Following that post, I read the comments and came across OpenStruct:

http://www.ensta.fr/~diam/ruby/online/ruby-doc-stdlib/libdoc/ostruct/rdoc/classes/OpenStruct.html

I have it working with what I need but there’s still more testing to be done. Just thought I would share.