How can I uppercase each element of an array?

Question

How can I turn an array of elements into uppercase? Expected output would be:

[\"Monday\", \"Tuesday\", \"Wednesday\", \"Thursday\", \"Friday\"]  
=> [\"M         


        

Answer 1

This should work:

Day.weekday.map(&:name).map(&:upcase)

Or, if you want to save some CPU cycles

Day.weekday.map{|wd| wd.name.upcase}