[RAILS] How to use Ruby return

What is return? ??

How to return the return value of a method. It is classified as a control structure. In Ruby, even if you don't bother to use return, the last processed value will be returned in the defined method.

However, if you want to get out of the process in the middle, you can forcibly return the value by using return.

example

■ When not using return

def total
  price = 1000
  num = 10

  "#{price}Circle clothes#{num}I bought one, so the total is#{price*num}It will be a circle."
  "I returned one, so the total is#{price*(num-1)}It became a circle."
end
p total

result

I returned one, so the total was 9000 yen.

If you do not use return, the last defined wording will be output.

■ When using return

def total
  price = 1000
  num = 10

  return "#{price}Circle clothes#{num}I bought one, so the total is#{price*num}It will be a circle."
  "I returned one, so the total is#{price*(num-1)}It became a circle."
end
p total

result

I bought 10 clothes for 1000 yen, so the total is 10,000 yen.

Using return prints the wording defined after return.

In this way, if you want to exit the process in the middle, you should use return. By the way, I haven't encountered the scene of using return yet ... lol

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