Question

I’m making a project with RMagick that generates a random banner advertisement with respect to size and colors.

First step is this, but it does not work properly. I’m using what’s called a ternary statement to make the string like “#ffffff, #f0f1cd, #123fff” etc.

# Generate sixteen random colors
1.upto(16) { |i|
    (defined? colors) ? colors << ", #%06x" % (rand(0xffffff)) : colors = "#%06x" % (rand(0xffffff))
}
puts colors.split(',')

The desired outcome is not correct. I want it split into an array like:
[“#ffffff”, “#f0f1cd”, “#123fff”]

In the most elegant approach possible.

Answer 1

You can do this which will be easier:

colors = 3.times.map{"%06x" % (rand * 0x1000000)}

NOTE: If your are using Ruby 1.9.3, you can use ranges.

colors = 3.times.map{"%06x" % rand(0..0xffffff)}