Ruby | Enumerator::new function

Ruby | Enumerator::new function

Last Updated : 06 Jan, 2020

The new function in Ruby is used to create a new Enumerator object, which can be used as an Enumerable.

Syntax: Enumerator.new Here, Enumerator is an object. Parameters: This function does not accept any parameters. Returns: the new set of values.

Example 1:

Ruby

# Ruby program for Enumerator::new function

# Calling the new function
fib = Enumerator.new do |y|
  a = b = 2
  loop do
    y << a
    a, b = b, a + b
  end
end
 
# Getting the result in an array form
p fib.take(10)

Output:

[2, 2, 4, 6, 10, 16, 26, 42, 68, 110]

Example 2:

Ruby

# Ruby program for Enumerator::new function
 
# Calling the new function
fib = Enumerator.new do |y|
  a = b = 2
  loop do
    y << a
    a, b = b, a * b
  end
end
 
# Getting the result in an array form
p fib.take(4)

Output:

[2, 2, 4, 8]

Ruby | Enumerator::new function

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Kanchan_Ray

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