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  1. Practice
  2. Functional Programming
  3. Introduction
  4. Hello World
  5. Discussions

Hello World

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  • aindl + 1 comment

    It seems haskell is broken:

    main = print "Hello World"

    Your Output (stdout) "Hello World" Expected Output Hello World

    • abhiranjan + 1 comment

      print -> putStrLn. You should not print ".

      • aindl + 1 comment

        thanks! Than it would make sense to fix https://www.hackerrank.com/challenges/fp-solve-me-first and use putStrLn there as well, because it is confusing.

        • abhiranjan + 1 comment

          Hi @aindl, for string type putStrLn should be preferred. While for non-string types you need to convert it into a string and then use putStrLn on it, and print is doing that for us. Check the difinition of print

          print = putStrLn. show
          • hugo_ratiney + 0 comments

            Thanks, this was confusing to me !

  • sakthipitchaiah + 0 comments

    Scala Code:

    def f() = println("Hello World")

  • brajrajsingh + 0 comments

    Dear Hackerrank Team Pls enable C/C++ Language in Functional Programming Section

  • robencom + 0 comments

    Lisp solution : (write-line "Hello World")

  • qxzsilver + 0 comments

    beginner OCaml student here, I'm teaching it myself. I don't seem to have problem defining functions for variables (in the classic OO-sense), but I am having problem with stdin/stdout in OCaml. I try to define inputString as read_line, then output the string literal "Hello, world" and then the inputString, but only "Hello, world" is printing. I'm not too sure what is going on.

  • subhashmantha + 0 comments

    object Solution{ def f():Any = {println("Hello World")} def main(args: Array[String]) { f() }

    } does not work an i do not understand why?

  • orubel + 1 comment

    Why isn't Groovy an option? Groovy is a functional programming language. Why isn't it in this category?

    • abhiranjan + 0 comments

      Hi @orubel, referring wiki page, Groovy is primarily a object oriented language, with some support to functional features.

  • avian3 + 1 comment

    Does it support scheme if yes is it lisp that i should choose?

    • abhiranjan + 0 comments

      Hi @avaian3, Racket (formerly known as PLT Scheme) will be another/better option. Though it depends on which course are you pursuing. If you are into SICP, then absolutely go for racket.

  • kofiowusu + 2 comments

    when i compile my code and i get this feedback"Sorry :( You didn't clear the samples test cases". Is there anything i can do please?

    • dheerajHackerRank Admin + 0 comments

      Hi @kofiowusu, Its spelt wrong and thats why you are getting the wrong answer.

    • krishnaisdinesh + 0 comments

      Checking answer is case sensitive , so match your anser with expected o/p

  • har777007 + 2 comments

    Add F# and Lisp too. F# because its now a first class language for MS and Lisp because.....well its Lisp !!

    • PRASHANTB1984 + 0 comments

      F# might be at a later stage but we'll enable lisp soon. However, we won't be able to provide lisp tempates, since none of us know Lisp. Let us know if you would you like to contribute templates?

    • PRASHANTB1984 + 0 comments

      Enabled! please check.

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