Ruby | Numeric dup() function

The dup() is an inbuilt method in Ruby returns the number itself.

Syntax: num1.dup()

Parameters: The function needs a number. 

Return Value: It returns itself only.

Example 1:  

Ruby

# Ruby program for dup() method in Numeric

# Initialize a number
num1 = 1.7

# Function used
num = num1.dup()

# Prints dup() of num
puts num

Output: 

1.7

Example 2: 

Ruby

# Ruby program for dup() method in Numeric

# Initialize a number
num1 = 19

# Function used
num = num1.dup()

# Prints dup() of num
puts num

Output:  

19