Detect if all letters are lower case

Question

How to detect in Ruby if a sentence has all lower case letters? Likewise, how to detect if a sentence has all uppercase letters?

You can assume this is an English sentence with no foreign characters.

Simple question, I know. Please excuse brevity.

Based on the possible duplicate, please tell us what you've done so far next time! — Uli Köhler, Mar 04 '14 at 02:07

score 2 · Answer 1 · edited May 23 '17 at 10:31

2

'string' == 'string'.downcase

If the string is equal to the string with all letters lowercased, then all letters are lowercased.

See here and here.

edited May 23 '17 at 10:31

Community

answered Mar 04 '14 at 01:27

evamvid

1 Answers1