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Ruby Ruby Basics (Retired) Ruby Strings String Methods

Eric Cross
Eric Cross
1,623 Points
Posted by Eric Cross
Eric Cross
1,623 Points

Purpose of reversing method

I'm not really sure what the purpose of reversing a string would be? I understand the need to uppercase, or lowercase it though.

2 Answers

Joe Cochran
Joe Cochran
18,249 Points

On a string of characters I cannot think of a good reason to use reverse. That said, reverse is a method applies to many different things, strings only being one of them. For example, you can reverse the contents of an array.

foo = [1,2,3,4]
bar = foo.reverse

This could be useful for sorting, say that you want some output to be either ascending (1,2,3,4) or descending (4,3,2,1). That's just one example off the top of my head though!

Eric Cross
Eric Cross
1,623 Points
Eric Cross
Eric Cross
1,623 Points

Nice. Thanks Joe, hadn't thought about reversing arrays.

Gavin Ralston
Gavin Ralston
28,770 Points
Gavin Ralston
Gavin Ralston
28,770 Points

Palindrome testing is one very useful example of string.reverse