Ruby | Enumerable each_witth_object() function

Last Updated : 12 Jul, 2025
The each_with_object() of enumerable is an inbuilt method in Ruby iterates for every object and returns the initial object. It returns the enumerator, if no block is given.
Syntax: enu.each_with_object(obj) { |obj| block } Parameters: The function takes the block which is used to initialise the initial object. Return Value: It returns the enumerator, if no block is given, else it returns the initial object.
Example 1: ruby 
# Ruby program for each_with_object method in Enumerable

# Initialize 
enu = [7, 9, 10]

# Prints each with object
enu.each_with_object([]) { |obj, el| el << obj+10 }
Output: 
[17, 19, 20]
Example 2: ruby 
# Ruby program for each_with_object method in Enumerable

# Initialize 
enu = [7, 9, 10]

# Prints each with object
enu.each_with_object([])
Output: 
Enumerator: [7, 9, 10]:each_with_object([])
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