[use google translator]
Yesterday I got a book called "Learning ruby - O'reilly" which was published in 2008.
Now I see that people use Ruby version 2.3 or higher
This book is based on Ruby 1.8.
Is there any problem in studying with this book?
I think
If it were quite different, it would be a problem.
If not, I will have to study a little more chapters.
I want to study with that book as much as possible.
I'd appreciate it if you could give me some more chapters to add in 1.8.
I would also like to let you know some of the information about the update history between Ruby versions.
(It's not obligatory, I can find it somehow :))
Thank you.
* This is a valid method definition in 1.9 but not in 1.8:Eh...? I have Ruby 1.8.4 on one of my older machines, and I copy/pasted
```
def method argument
# stuff
end
```
This book is based on Ruby 1.8.
I want to study with that book as much as possible.
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