CODEWITHSUNDEEP
ruby
user3408293
user3408293

Reputation: 1395

printing last line in a method with puts

Given

def sayMoo numberOfMoos
  puts 'mooooooo...'*numberOfMoos
  'yellow submarine'
end

I am having trouble understanding why 

x = sayMoo 2
puts x

gives me

mooooooo...mooooooo...
yellow submarine

and

sayMoo 2

gives me

mooooooo...mooooooo...

I am hoping someone could explain it.

Upvotes: 0

Views: 48

Answers (2)

BroiSatse
BroiSatse

Reputation: 44715

puts is a method displaying given string (or object) to console (by default). Your method is calling it to display 'moooo... mooo', and then returns the result of lastly excuted expression, in this case it returns the string 'yellow submarine'. Hence when you do:

x = sayMoo 2

You are executing your method, which first displays 'moo' message, and then assign 'yallow submarine' to variable x, which you can use puts on to display. If you just do:

sayMoo 2

method is executed, but the value returned by method is lost and is not being displayed.

Upvotes: 0

Denis de Bernardy
Denis de Bernardy

Reputation: 78561

Calling the functionputs moooooos.

The first example puts the function's return value, which is yellow submarine, in addition to that.

The second, in contrast, just calls the function.

Upvotes: 2

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