What does the "bang" (!) operator do when appended to a method name in Ruby?

Question

Admin · Accepted Answer

It indicates that the method mutates the receiver object

Admin · Answer

It indicates that the method returns a new object instead of modifying the receiver

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It raises an exception if the method fails

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It performs a bitwise operation on the receiver object

Q. What does the "bang" (!) operator do when appended to a method name in Ruby?