olemus
objekti koopia ilma viidatud muude objektideta
= a copy of an item with no other items referenced

ülevaateid
https://en.wikipedia.org/wiki/Object_copying#Shallow_copy

http://net-informations.com/faq/net/shallow-deep-copy.htm

https://we-are.bookmyshow.com/understanding-deep-and-shallow-copy-in-javascript-13438bad941c

https://medium.com/beingcoders/shallow-deep-and-lazy-copy-java-basics-f37acdec52cd

https://realpython.com/copying-python-objects/

vt ka
- laiskkoopia
- süvakoopia