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shallow copy and deep copy in ruby

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ServerMonk answered on May 30, 2022 Popularity 3/10 Helpfulness 8/10

answer shallow copy and deep copy in ruby

related deep copy in ruby

related ruby deep copy

shallow copy and deep copy in ruby

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a = { "x" => 0, "y" => { "z" => 0 } }
 #=> {"x"=>0, "y"=>{"z"=>0}

# normal copy, copies reference of a.
b = a

b["y"]["z"] = 1 
b
# {"x"=>0, "y"=>{"z"=>1}} 
 a
# {"x"=>0, "y"=>{"z"=>1}}

# shallow copy, just changes the parent object reference not the child once
c = b.clone
c["x"] = 1

c
# => {"x"=>1, "y"=>{"z"=>2}} 
b
# => {"x"=>0, "y"=>{"z"=>2}}

c["y"]["z"] = 3
 
c
# => {"x"=>1, "y"=>{"z"=>3}} 
b
# => {"x"=>0, "y"=>{"z"=>3}}

#deep copy, changes all the child object reference

d = JSON.parse(c.to_json)
 #=> {"x"=>1, "y"=>{"z"=>3}}
d["y"]["z"] = 5 
c
# => {"x"=>1, "y"=>{"z"=>3}} 
d
# => {"x"=>1, "y"=>{"z"=>5}}

Popularity 3/10 Helpfulness 8/10 Language javascript

Source: Grepper

Tags: deep-copy javascript ruby shallow-copy

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Contributed on Jan 09 2023

ServerMonk

0 Answers Avg Quality 2/10

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deep copy in ruby

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require 'deep_clone'

original = [1, [2, 3]]
deep_copy = original.deep_clone

original[1][0] = 42

puts deep_copy[1][0]  # Output: 2 (since deep_copy is an independent copy)

Popularity 2/10 Helpfulness 3/10 Language ruby

Source: chat.openai.com

Tags: deep-copy ruby

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Contributed on Sep 07 2023

Your Friend

0 Answers Avg Quality 2/10

ruby deep copy

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food = %w( bread milk orange )
food.map(&:object_id)       # [35401044, 35401020, 35400996]
food.clone.map(&:object_id) # [35401044, 35401020, 35400996]

Popularity 6/10 Helpfulness 2/10 Language ruby

Source: Grepper

Tags: deep-copy ruby

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Contributed on May 30 2022

patrick204nqh

0 Answers Avg Quality 2/10

shallow copy and deep copy in ruby

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