Remove trailing spaces from each line in a string in ruby

Question

Can anyone help me, how to remove the trailing white spaces from each line in a string in ruby.... For example:

str = "Hello everyone. \nHope you guys are doing good  \nstrange i can't remove this spaces"

I tried rstrip but its not working for me.... May be have to try gsub.... I want the answer to be in below wayy.

"Hello everyone.\nHope you guys are doing good\nstrange i can't remove this spaces"

rstrip strips spaces at the end of a string, not at the end of each line. You could probably use regular expressions to substitute before each \n. — jcoppens
– jcoppens, Commented Jul 10, 2015 at 16:37

DickieBoy · Accepted Answer · 2015-07-10 16:09:27Z

4

str.split("\n").map(&:rstrip).join("\n")

Its probably doable with regex but I prefer this way.

answered Jul 10, 2015 at 16:09

DickieBoy

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orde · Accepted Answer · 2015-07-10 16:18:56Z

1

You can use gsub!, which will modify the receiver:

str = "Hello everyone. \nHope you guys are doing good  \nstrange i can't remove this spaces"
str.gsub!(/\s\n/, "\n").inspect
#=> "Hello everyone.\nHope you guys are doing good \nstrange i can't remove this spaces"

answered Jul 10, 2015 at 16:18

orde

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Stefan · Accepted Answer · 2015-07-10 17:25:50Z

1

Another one using gsub:

str.gsub(/\s+$/, '')
#=> "Hello everyone.\nHope you guys are doing good\nstrange i can't remove this spaces"

/\s+$/ matches one or more spaces (\s+) right before a line break ($)

answered Jul 10, 2015 at 17:25

Stefan

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engineersmnky · Accepted Answer · 2015-07-10 16:28:42Z

0

Or like this

str.each_line.map(&:strip).join("\n")
#=> "Hello everyone.\nHope you guys are doing good\nstrange i can't remove this spaces"

answered Jul 10, 2015 at 16:28

engineersmnky

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