anchor.diff:                  p Computational Investing by @Stan
                     span on 24 Jan, Fri
                   p.tagline by Hackers and Painters
  +            li
  +              a(href='http://www.meetup.com/HASKELL-SG/events/158576232/')
  +                p The Mathematics of Functors (by Dr. Shaun Martin)
  +                  span on 24 Jan, Fri
  +                p.tagline by HASKELL.SG
               li
                 a(href='http://www.meetup.com/DataScience-SG-Singapore/events/158721752/')
                   p DataScience SG Meetup - "What is this Data Science thing all about?"
  
positive.code:                 p Meetup #1
                    span on 11 Feb, Tue
                  p.tagline by MongoDB User Group
  
          section
            h3 open source
  
negative.code:         section
            h3 open events
            ul.open-list.first
  
              li
                a(href='http://www.meetup.com/Singapore-Ruby-Group/events/158569682/')
                  p January Meetup
  