Learn to Program, 2nd Edition

Stringy Superpowers

I’d really feel like I was doing you a disservice if I didn’t show you at least a little more of what strings can do (in Ruby, at least). Plus, if I do, I can give you more interesting exercises. ☺ Mind you, I’m still not going to show you even half, but I’ve just got to show you a little more.

Remember back here when I said a lot of the string methods also work on arrays? Well, it goes both ways: some of the array methods you’ve learned also work on strings.

Perhaps the most important and versatile is the […] method. The first thing you can do with it is pass in a number and get the character at that position in the string:

da_man = 'Mr. T'
big_T  = da_man[4]
puts big_T

T

And then you can do fun stuff like this:

puts ...