compare strings with the <=> method : String comparisons « String « Ruby

1. Ruby
2. String
3. String comparisons

compare strings with the <=> method

It compares the character code values of the strings, 
returning -1 (less than), 
          0 (equals), or 
          1 (greater than), depending on the comparison, which is case-sensitive

"a" <=> "a" # => 0
"a" <=> 97.chr # => 0
"a" <=> "b" # => -1
"a" <=> "'" # => 1

 

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