Ruby | Set << method
The << is an inbuilt method in Ruby which adds an element to the set.
Syntax: s1.name << (element)
Parameters: The function takes an element which is to be added to the set.
Return Value: It adds an element to the set.
Example 1:
#Ruby program to illustrate the << method #requires the set require "set" s1 = Set[2, 1] #Prints s1 puts s1 #Enters 4 into it s1 << 4 #Prints s1 puts s1 #Enters 4 into it #But set has already 4 s1 << 4 #Prints s1 puts s1 |
Output:
Set: {2, 1} Set: {2, 1, 4} Set: {2, 1, 4}
Example 2:
#Ruby program to illustrate the << method #requires the set require "set" s1 = Set[] #Prints s1 puts s1 #Enters 1 into it s1 << 1 #Enters 2 into it s1 << 2 #Prints s1 puts s1 |
Output:
Set: {} Set: {1, 2}
Reference: https://devdocs.io/ruby~2.5/set#method-i-3C-3C
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