Writing an array in a file in ruby

Question

how to write an array in Ruby keeping the elements of the array itself in the same line?

E.g.

a= ["Tom", "Jerry"]
puts a

gives:

Tom
Jerry

But I need to have:

Tom, Jerry

Thank you for your help!

might also want to look at the [`CSV`](https://ruby-doc.org/stdlib-2.4.0/libdoc/csv/rdoc/CSV.html) class as a specific use case of writing arrays as comma separated values to a file — Simple Lime, Sep 13 '17 at 22:50

score 4 · Answer 1 · answered Sep 13 '17 at 22:37

4

You can use the join method on the array to do this.

a= ["Tom", "Jerry"]
puts a.join(", ")

Interestingly, you can also multiply the array by the string you wish to separate the elements by:

a= ["Tom", "Jerry"]
puts a * ", "

Both of the above give the same output:

Tom, Jerry

answered Sep 13 '17 at 22:37

Chad

Wow, brilliant! Thank you so much! It works! :-) – Nightwisher Sep 13 '17 at 22:51

1 Answers1