Not able to find to_yaml definition

I am looking at rails edge source code.

I am able to do

puts User.find.to_yaml

However I am not able to find piece of code where ‘def to_yaml’ is.
How this to_yaml serialization is working?

can fully understand how to_json and to_xml is working but to_yaml
beats me.


YAML is part of Ruby. Check out for
YAML class readme.


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