undefined - undefined

using DataFrames, PrettyTables
x = [1,2,3,4,5]
y = [6,7,8,9, 10]
df = DataFrame("x" => x, "y" => y)
pretty_table(df, tf=tf_borderless)

      x       y 
  Int64   Int64 

      1       6
      2       7
      3       8
      4       9
      5      10

using Gadfly
p = plot(x = x, 
y = y,
Geom.line)
using Cairo, Fontconfig
draw(PNG("fig1.png"), p)

function add_two(x)
    return(x + 2)
end

add_two (generic function with 1 method)