Can some one please explain how this code worked.

Question

Hey guys so I am on the && operator code challenge and took me a bit of time to figure this one out and I finally did but don't fully understand how?
 this is my code that got in with a pass:
def checkspeed(carspeed)
  if carspeed >= 40 && carspeed <= 50
    return "safe"
    else 
    return "unsafe"
  end
  end
I understand why the if statement worked but I don't understand on the line where it says return why did I "have " to put "return" and not the "puts" command. 
and I put the code in the workplace to see what it does but nothing happens but I'm guessing the way the code is written it is not supposed to because I am not telling ruby to put anything besides the "If" statements. Right?

Jennifer Nordell · Accepted Answer

Hi there!  Essentially, the reason you have to return the value is because the challenge demands it because of some mechanism they use to grade it.  Ruby by default returns a value and there is some debate over whether you should ever explicitly return a value in Ruby.
Here's the part of the instructions that make this a requirement:
The method below checks the speed of a car and returns a string value: either "safe" or "unsafe".
Return "safe" if:
Here, the challenge explicitly states that you must return a value.  Your puts statement simply prints/displays  the value.
Other than to say that it is a requirement of the challenge, there would likely be no point in explicitly returning the value.
Hope this helps! :sparkles:

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filibonio hernandez

filibonio hernandez

Can some one please explain how this code worked.

1 Answer

Jennifer Nordell

Jennifer Nordell