When use Ruby interpreter (CUI), where does saved .yml go?

Hi
I use Windows 7 and Ruby 2.2.3p173

I wrote this program:
https://bitbucket.org/trimoriarti/helper/raw/f8c9a1e19fe2bd3fcbfe879c1724862c7e4751a5/english/dictionary.rb
The program is dictionary. So it could save and find the definition of a
word. The program save/dump a hash (word-definition) into
dic_database.yml.

When I ran it through command line, it created dic_database.yml in the
same directory. Everything worked.
Then I deleted the .yml and tried to open the program with Ruby
interpreter. But the program didn’t create any .yml in the same dir.
When I quit the interpeter then try again to find a word, I can find it.
So the object isn’t temporarily saved.

But, then, where does saved .yml/hash object go (what dir)?
Thanks.

Your code is not very idiomatic ruby.

Things such as:

puts("")

How did you come up with this?

puts

Would suffice. Or alias e puts, then just use e.

Anyway - if you really wrote that program yourself, which
I am not totally convinced, then you obviously know where
to save your data structures.

Simply use a separate method that will do so, and store
into a specific file. You are in full control of your own
code! I don’t understand how you can not understand what
your own code does.

Thank you for your time, Robert.

I wrote puts("") because I wanted to give line break, or probably I
should use “\n” in the end of each sentence.
Yes, I believe my code isn’t common for Rubyist because I don’t prefer
to omit parentheses for method invocation, for example, and I’m totally
newbie as Ruby programmer or as programmer in common. I believe I could
not go as expected Rubyist.

Let’s back to the problem.
I believe I don’t understand precisely the w+'s behavior. Therefore my
code doesn’t go as I expected.

And I think I’m not clear: it is working as expected if I run it through
cmd, but isn’t through Ruby interpreter, I mean, when I right click the
file and Open with Ruby interpreter (CUI) through Windows Explorer.

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