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Ruby string contains Code Example

Last Updated on Wednesday 5th Oct 2022

include? - Returns true if a string is in another string.

Check if a string includes a specified character(s), case sensitive.

			
					'hello World'.include? hello.'

			
	

The Above Code returns

			
					true

			
	
  • include? method is case sensetive.
  • You may want to do a downcase() or upcase() before calling include?()
  • str.upcase => Returns entire str lower cased. upcase! mutates.
  • str.downcase => Returns entire str upper cased. downcase! mutates.
			
					if "abcd".include? "bc"
   puts "It includes 'bc'"
end

			
	

The Above Code returns

			
					It includes 'bc.'