Writing an array in a file in ruby [duplicate]

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 class as a specific use case of writing arrays as comma separated values to a file — Simple Lime
– Simple Lime, Commented Sep 13, 2017 at 22:50

Chad · Accepted Answer · 2017-09-13 22:37:54Z

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, 2017 at 22:37

Chad

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1 Comment

Wow, brilliant! Thank you so much! It works! :-)