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FizzBuzz in Single Line Of Code

15 November 2012
Icon 16 Comments
Posted by AdamSpeight2008 
FizzBuzz in Single Line Of Code

Enumerable.Range(1, 100).
   Select(Function(Number) New Tuple(Of Integer, String)(Number, If(Number Mod 3 = 0, "Fizz", ""))).
   Select(Function(Tuple) New Tuple(Of Integer, String)(Tuple.Item1, If(Tuple.Item1 Mod 5 = 0, Tuple.Item2 & "Buzz", Tuple.Item2))).
   Select(Function(Tuple) If(Tuple.Item2 <> "", Tuple.Item2, Tuple.Item1.ToString)).
   ToList.
   ForEach(AddressOf Console.WriteLine)

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16 Comments On This Entry

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jon.kiparsky 

16 November 2012 - 08:09 AM
That looks like six lines of code from where I'm sitting. :)
0

Julyuary 

16 November 2012 - 08:35 AM
I thought I was just crazy. It's definitely 6 lines.
0

Dogstopper 

16 November 2012 - 08:42 AM
I would retitle this. "Fizzbuzz in a single expression"
0

lucky3 

16 November 2012 - 08:47 AM
It actually is one single line of code in VB.NET!
1

jon.kiparsky 

16 November 2012 - 08:51 AM
A line is 80 columns. :)
0

lucky3 

16 November 2012 - 09:01 AM
Implicit Line Continuation: http://msdn.microsof...o/ee681551.aspx
2

AdamSpeight2008 

16 November 2012 - 09:49 AM
lucky3:- It is a single line of code (spread over 6 editor lines.) and also right about the Implicit Line Continuations which VB.net has has since VS2010. There are still places where the explicit line continuation are still required to ensure correct understanding by the compiler. VB.net and vb6 used to be line orientated but that distinction is a little blurry now. In C# it would be akin to allow the insertion of ; anywhere. It wasn't an easily feature to add to vb.net especially with the XML Literals (which follow different lexical rules, then there the code that is embedded in the xml).

What is deemed an Expression is complex and subtle, for example a Multi-Line Lambda are still a single Lambda Expression.
1

AdamSpeight2008 

16 November 2012 - 09:56 AM
In most C style languages a line of code is terminated by the ; symbol. 

Var s = @"Line 1
Line 2
Line 3"; /* Is a singe line of code with verbatim string literal  */
0

AdamSpeight2008 

16 November 2012 - 10:19 AM
The ForEach( is a Subroutine member method (aka a Void returning Function) of the class List(Of T) so it has to be the end of the expression / LOC. All of the rest are Functions which permits us to use method call chaining, based off the output / result of the previous function.
0

jon.kiparsky 

16 November 2012 - 10:34 AM
This is one of those weird FP tics, that if you can cram a bunch of operations in to a line, it's somehow easier to understand. It's nothing new, though. Here's how it would look in scheme:

(define fizzbuzz (lambda (x) (if (= 0 (modulo x 15)) "Fizzbuzz" (if (= 0 (modulo x 5)) "Buzz" (if (= 0 (modulo x 3)) "Fizz" " ")))))


However, it seems more sensible to format it so as to reflect the actual process:

(define fizzbuzz (lambda (x) 
(if (= 0 (modulo x 15)) "Fizzbuzz" 
  (if (= 0 (modulo x 5)) "Buzz" 
    (if (= 0 (modulo x 3)) "Fizz" " ")
))))
0

AdamSpeight2008 

16 November 2012 - 11:16 AM
jon.kiparsky It is not correct to say it doing it same way. Mine produce a stream of number (1 to 100) from that produce a new stream of the "Fizz". From that produces another stream it the "Buzz" parts. From that produce the final stream of output. This final stream is then outputted to the Console window. Simples.

Plus you FizzBuzz wrong. Ha! Ha!
Your is effectively doing 
If x % 15 = 0 Then
 "FizzBuzz"
Else
  If x % 5 = 0 Then
    "Buzz"
  Else
    If x % 3 = 0 Then
      "Fizz"
    Else
      Rem " " is Wrong '
      x  ' Should out the number '
    End If
  End if
End If
0

jon.kiparsky 

16 November 2012 - 11:34 AM
Wrong? Oh, okay, you want the number as return. Whatever. The point is, it's a pretty trivial program, and making it more complicated than it needs to be doesn't seem like much of a gain.
1

AdamSpeight2008 

16 November 2012 - 02:16 PM
jon.kiparsky:- If your "trivial program" produces the incorrect output, it doesn't matter how simple the code it still a failure. I did the "FizzBuzz" program mainly as an exercise and to try out different approaches or methods of thinking about the problem. From what I see a large percentage seem take the approach of a basic for loop and a couple of If ... Then .

Quote

... making it more complicated than it needs to be doesn't seem like much of a gain.


I exercised my mind. A version that starts with a string.
Spoiler


I could easily exploit parallelism in mine.
FizzBuzz (Parallel Version)
Spoiler


Here is a head-scratcher for you. Devised a version without a single If Statement.

FizzBuzz (No If Version)

Spoiler
3

ishkabible 

16 November 2012 - 03:04 PM
haskell:
map fb [1..100] where fb x
    | x % 15 == 0 = "FizzBuzz"
    | x % 5 == 0  = "Fizz"
    | x % 3 == 0  = "Buzz"
    | otherwise   = show x


or could also use list comprehension I suppose.

I think you need to define what a line is and what an expression is. I call a line an editor line and only well formatted short lines(e.g. 80 characters) really count. a semi-colon in C syntax langues is just an ending of different kinds of statements and has nothing to do with lines other than the fact that it is generally placed at the end of lines for good formatting.
0

AdamSpeight2008 

16 November 2012 - 03:32 PM
ishkabible:- Thank you for coming we'll be in touch. :no:
0

lar3ry 

30 November 2012 - 03:45 PM

jon.kiparsky, on 16 November 2012 - 09:51 AM, said:

A line is 80 columns. :)/>

You... You... Fortranner you!
0
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