Question

I’m dealing with Ruby on Rails application.

Just to be educated, I would like to know if it is possible to generate an array of formatted strings; in this particular situation – hours and minutes.

I want to get following array: [“09:00”, “10:00”, “11:00”, “12:00”] from something like (9..12).to_a and something else ? What is the simpliest and cleanest way for this ?

Sorry if the question is stupid.

Thanks in advance

Answer 1

Something like this using rjust for left padding.

(9..12).map{ |t| "#{t.to_s.rjust(2, '0')}:00" }
#=> ["09:00", "10:00", "11:00", "12:00"]