The <<() is an inbuilt function in Ruby inserts the element in the SizedQueue. The SizedQueue have a particular capacity and cannot accept elements once it is full.
Syntax: sq_name << element
Parameters: The function takes the element to be inserted into the SizedQueue.
Return Value: It inserts the element into the SizedQueue.
Example 1:
#Ruby program for << function in SizedQueue #Create a new SizedQUEUE q1 q1 = SizedQueue. new (2)
#push 5 q1
<< 5
#push 6 q1
<< 6
#Prints the element puts q1.pop
puts q1.pop
|
Output:
5 6
Example 2:
#Ruby program for << function in SizedQueue #Create a new SizedQUEUE q1 q1 = SizedQueue. new (3)
#push 15 q1
<< 15
#push 16 q1
<< 16
#push 17 q1
<< 17
#Prints the element puts q1.pop
puts q1.pop
puts q1.pop
|
Output:
15 16 17
Reference: https://devdocs.io/ruby~2.5/sizedqueue#method-i-3C-3C