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Ruby | Set delete() function
  • Last Updated : 07 Jan, 2020

The delete() is an inbuilt method in Ruby which deletes the given object from the set and returns the self object. In case the object is not present, it returns self only.

Syntax: s1.name.delete(object)

Parameters: The function takes a mandatory parameter object which is to be deleted.

Return Value: It returns self after deletion of the object from the set.

Example 1:






#Ruby program to illustrate the
#delete method
  
#requires the set
require "set"
  
    s1
    = Set[1, 2, 3]
  
#deletes 2 and prints self
      puts s1.delete(2)
  
#deletes 1 and prints self
          puts s1.delete(1)
  
#deletes 4 and prints self
              puts s1.delete(4)

Output:

Set: {1, 3}
Set: {3}
Set: {3}

Example 2:




#Ruby program to illustrate the
#delete method
  
#requires the set
require "set"
  
    s1
    = Set[11, 12, 33, "a"]
  
#deletes 'a' and prints self
      puts s1.delete("a")
  
#deletes 11 and prints self
          puts s1.delete(11)
  
#deletes 33 and prints self
              puts s1.delete(33)

Output:

Set: {11, 12, 33}
Set: {12, 33}
Set: {12}

Reference: https://devdocs.io/ruby~2.5/set#method-i-delete

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