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Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

Complex#to_json

to_json(*args)

Returns a JSON string representing self:

Example
require 'json/add/complex'
puts Complex(2).to_json
puts Complex(2.0, 4).to_json

Output:

Example
{"json_class":"Complex","r":2,"i":0}
{"json_class":"Complex","r":2.0,"i":4}
See also #to_i #to_r #to_f #to_s also in 4.0 · 3.4 · 3.2 · 3.1 · 3.0