re = /^(https:\/\/)?(www\.)?(meetup\.com\/){1}[A-Za-z0-9-]{5,60}(\/events\/){1}[A-Za-z0-9-]+(\/)?$/m
str = 'example
http://example
https://www.example.com
http:/example.com
example.reallylongtld
https://example.com
https://ww.example.com
https://www.example.com
https://www.meetup.com/
https://www.meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/
https://www.meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/
https://www.meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/250528399
https://www.meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/250528399/
https://www.meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/lfwnrpyxhbzb/attendees/
www.meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/250528399/
www.meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/250528399
meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/250528399
meetup.com/Bay-Area-Women-in-Machine-Learning-and-Data-Science/events/250528399/
https://www.meetup.com/Metis-New-York-Data-Science/events/250798771/
'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html