Create array from some string from text file - Ruby

Question

I'm trying to create array from string from text file.

For example in txt file I have string.

"ABC;DEF;GHI"

I want to create array which looks like:

["ABC","DEF","GHI"]

I have tried that using method below:

File.open(file.txt).map { |line| line.split(/;/) }

but output of the above method was:

[["ABC","DEF","GHI"]]

You may notice that this is an array within an array.

What I should to do?

You should flatten it. apidock.com/ruby/Enumerable/flat_map — razvans
– razvans, Commented Nov 4, 2021 at 13:51

Rajagopalan · Accepted Answer · 2021-11-04 13:53:21Z

1

Use flat_map instead of map

Code

File.open(file.txt).flat_map{ |line| line.split(/;/) }

answered Nov 4, 2021 at 13:53

Rajagopalan

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2 Comments

I know but I could not accept earlier because because the answer can be accepted at the earliest 10 min after asking the question

Ah Okay. I thought you might not be knowing it, sorry!