Ruby - Split the string and store it in a Array based on the first word

Question

I am pretty much new to Ruby and I am looking at the best way to do the below.

I have a string like this "Account 1 - Name, Account 1 - Age, Account 2 - Name, Account 2 - Age"

I am looking for an output something like this

[[Account 1, Name], [Account 1, Age], [Account 2, Name], [Account 2, Age]]

Certainly I don't want to post the ways I tried as it looks silly and ugly. I am looking for a single liner if possible. Many thanks and appreciate all your help!

@Joseph gives the normal solution, but you could also write str.split(/ - |, /).each_slice(2).to_a. str.split(/ - |, /) #=> ["Account 1", "Name", "Account 1", "Age", "Account 2", "Name", "Account 2", "Age"]. See Enumerable#each_slice (the "no block given" case). — Cary Swoveland
– Cary Swoveland, Commented May 22, 2020 at 18:17

Joseph Cho · Accepted Answer · 2020-05-22 14:29:46Z

3

Looks pretty straightforward. You need to split once based on ,, and then again based on -. The first split already stores your data into an array for you so you don't need to do anything else.

string = "Account 1 - Name, Account 1 - Age, Account 2 - Name, Account 2 - Age"
array = string.split(', ')
array = array.map { |acc| acc.split(' - ') }
# [[Account 1, Name], [Account 1, Age], [Account 2, Name], [Account 2, Age]]

edited May 22, 2020 at 14:29

answered May 22, 2020 at 14:25

Joseph Cho

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2 Comments

shank087 Over a year ago

Cool. Thank you so much! Since I am new to Ruby, I was not aware of the map method. May be I missed reading the document or it did not strike me when I went through the docs. Got to know about it now!

Joseph Cho Over a year ago

@shank087 sure thing! I edited my answer you gotta reassign array if you don't use map!

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