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regexrubular

Rubular Expression

How can we extract the words from a string in rubular expression?

$0Public$robotics00$india0$000facebook

If we want to extract the words Public robotics india facebook from the above string, how can we?

I am using ([^0$]), but it is giving the letters not the proper words.

Solution

  • You can match $ followed by optional zeroes, and use a capture group to match the characters other than $ 0 or a whitespace char

    \$0*([^0$\s]+)

    Explanation

    • \$ Match a $ char
    • 0* Match optional zeroes
    • ( Capture group 1
      • [^0$\s]+ Match 1+ times any char except 0 $ or a whitespace char
    • ) Close group 1

    Regex demo

    re = /\$0*([^0$\s]+)/
str = '$0Public$robotics00$india0$000facebook
'

# Print the match result
str.scan(re) do |match|
    puts match.first
end

    Output

    Public
robotics
india
facebook