CODEWITHSUNDEEP
ruby
Jane
Jane

Reputation: 23

How do I remove the last line of a string that has visible characters in ruby?

need to be able to take the last line of a string and put it in it's own string. and then more importantly I need to be able to remove the last line of the original string that has non-whitespace characters.

Upvotes: 2

Views: 1340

Answers (1)

Drenmi
Drenmi

Reputation: 8777

Consider a string like the following (line breaks written as \n):

str = "Hello\nThere\nWorld!\n\n"

First, use String#strip to remove trailing whitespace, and use String#split to break the string into an array where each element represents one line of the string.

str = str.strip.split("\n")
#=> ["Hello", "There", "World!"]

You can then extract the last line from the last element in the array using Array#pop.

last_line = str.pop
#=> "World!"

Finally, use Array#join to re-assemble the array.

str = str.join("\n")
#=> "Hello\nThere"

Upvotes: 3

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