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r7kamura/raise_kwargs_test.rb

Created May 29, 2020 08:06
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raise_kwargs_test.rb
class MyError < StandardError
def initialize(**options)
p options
end
end
raise MyError, foo: :bar
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$ ruby /Users/r7kamura/Desktop/raise_kwargs_test.rb
/Users/r7kamura/Desktop/raise_kwargs_test.rb:7: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/Users/r7kamura/Desktop/raise_kwargs_test.rb:2: warning: The called method `initialize' is defined here
{:foo=>:bar}
Traceback (most recent call last):
/Users/r7kamura/Desktop/raise_kwargs_test.rb:7:in `<main>': MyError (MyError)

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