How do I require and use a library from the Ruby Standard Library such as DateTime?

Question

I'm using rvm. I created a new project and specified which version of Ruby I'd like (in this case 2.1.0) and gave the project its own Gemset.

mkdir proj
cd proj
rvm use ruby-2.1.0
rvm gemset create proj
echo 'ruby-2.1.0' > .ruby-version
echo 'proj' > .ruby-gemset
touch proj.rb

I'd like proj.rb to require DateTime, make a new instance of a DateTime object, then exit.

score 2 · Accepted Answer · edited Feb 10 '14 at 00:33

2

Do as below

require 'date'
DateTime.parse '12Feb,2014'

You just need to write require 'date', now you will be able to use all methods from the DateTime class API.

edited Feb 10 '14 at 00:33

Max

answered Feb 09 '14 at 21:30

Arup Rakshit

What's `pry`? I don't have that on my system. – franksort Feb 09 '14 at 21:37
Ah, I see. DateTime's parent is the Date class. Thanks! – franksort Feb 09 '14 at 21:44
pry is a gem that can replace irb.. It's much better :-) Look it up – Abdo Feb 09 '14 at 23:45

1 Answers1