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Ruby | Enumerable include?() function

  • Last Updated : 05 Dec, 2019

The include?() of enumerable is an inbuilt method in Ruby returns a boolean value. It returns true if the enumerable contains the given elements, or else it returns false.

Syntax: enu.include?(el)

Parameters: The function takes an element which is to be checked for.

Return Value: It returns a boolean value.

Example #1:






# Ruby program for include? method in Enumerable
  
# Initialize 
enu = [2, 8, 9, 10, 23]
  
# Prints
puts enu.include?(8)
  
puts enu.include?(7)

Output:

true
false

Example #2:




# Ruby program for include? method in Enumerable
  
# Initialize 
enu = (20..30)
  
# Prints
puts enu.include?(10)
  
puts enu.include?(29)

Output:

false
true
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