Output about the method Part 1

Output about the method!

I knew it in my head, but can I explain it again? The real intention is that it is a little difficult to say.

I would like to re-recognize it while thinking in words to deepen my understanding.

Let's start the output! !!

What is a method?

Simply put, a mass of processing? It's like that. `def, method name (please decide.) Line break Write a process, start a new line Write end. ``

method.rb


def method name
Write the process here
end

What do you use it for? For example, in the case of do not use methods to process calculations

sample.rb



eraser = 110
pen = 150

puts eraser + pen

And with use the method ...

sample.rb


def addition
  eraser = 110
  pen = 150
  eraser + pen
end

puts addition

It will be.

If it's simple, you won't feel the meaning or benefit of using the method. But when the process gets complicated, you can feel the tremendous benefits! !!

Various processes such as if can be described in the method. For example ...

sample.rb


def register
  eraser = 110
  pen = 150
  bill = eraser + pen
  if bill >= 200 #10 for purchases over 200 yen%off!!
    bill * 0.9
  end
end
  puts register #Call the register method.

And, like this, it will calculate and discount with one method (lump).

That's all for today's output. I think it will continue until the second and third.

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