String Methods

String Methods

Ruby strings come with a large set of built-in methods for transformation and inspection, like .upcase, .downcase, .reverse, .length, and .strip. Most string methods return a new string rather than modifying the original, following Ruby's general preference for non-mutating operations. Methods ending in ! (like .upcase!) mutate the string in place instead.

Note: A method ending in ! (like upcase!) usually mutates the receiver in place -- the non-! version returns a new object instead.

Example: String Methods

text = "  Hello, Ruby!  "

puts text.strip
puts text.strip.upcase
puts text.strip.length
puts text.strip.reverse