#ruby
If we wanted to tell our car to change gear, we tell it not only to change gear, but also which gear to change to. The process of asking these kinds of questions is referred to as passing an argument to the method. An argument (also called a "parameter") is an input value that's provided to a method. An argument can be used to influence: how a method operates on which object a method operates. As one might expect, the object sending the message is called the sender, and the object receiving the message is called the receiver.
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Object Oriented Programmingmight rephrase the analogy to consider the question to be an instruction, and the answer a status report indicating whether or not the instruction was executed successfully.
Sometimes we need more flexibility with our instructions. <span>For example, if we wanted to tell our car to change gear, we tell it not only to change gear, but also which gear to change to. The process of asking these kinds of questions is referred to as passing an argument to the method. An argument (also called a "parameter") is an input value that's provided to a method. An argument can be used to influence: how a method operates on which object a method operates. As one might expect, the object sending the message is called the sender, and the object receiving the message is called the receiver.
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