Exercism v3 launches on Sept 1st 2021. Learn more! ๐Ÿš€๐Ÿš€๐Ÿš€
Avatar of suzaku

suzaku's solution

to Bob in the Nim Track

Published at Dec 06 2018 · 0 comments
Test suite


This exercise has changed since this solution was written.

Bob is a lackadaisical teenager. In conversation, his responses are very limited.

Bob answers 'Sure.' if you ask him a question.

He answers 'Whoa, chill out!' if you yell at him.

He answers 'Calm down, I know what I'm doing!' if you yell a question at him.

He says 'Fine. Be that way!' if you address him without actually saying anything.

He answers 'Whatever.' to anything else.

Bob's conversational partner is a purist when it comes to written communication and always follows normal rules regarding sentence punctuation in English.

Running the tests

To compile and run the tests, just run the following in your exercise directory:

$ nim c -r bob_test.nim

Submitting Exercises

Note that, when trying to submit an exercise, make sure the solution is in the $EXERCISM_WORKSPACE/nim/bob directory.

You can find your Exercism workspace by running exercism debug and looking for the line that starts with Exercises Directory.

Need help?

These guides should help you,


Inspired by the 'Deaf Grandma' exercise in Chris Pine's Learn to Program tutorial. http://pine.fm/LearnToProgram/?Chapter=06

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.


import unittest

import bob

suite "Bob":

  test "stating something":
    check hey("Tom-ay-to, tom-aaaah-to.") == "Whatever."

  test "shouting":
    check hey("WATCH OUT!") == "Whoa, chill out!"

  test "shouting gibberish":
    check hey("FCECDFCAAB") == "Whoa, chill out!"

  test "asking a question":
    check hey("Does this cryogenic chamber make me look fat?") == "Sure."

  test "asking a numeric question":
    check hey("You are, what, like 15?") == "Sure."

  test "asking a numeric question":
    check hey("fffbbcbeab?") == "Sure."

  test "talking forcefully":
    check hey("Let's go make out behind the gym!") == "Whatever."

  test "using acronyms in regular speech":
    check hey("It's OK if you don't want to go to the DMV.") == "Whatever."

  test "forceful questions":
    check hey("WHAT THE HELL WERE YOU THINKING?") == "Calm down, I know what I'm doing!"

  test "shouting numbers":
    check hey("1, 2, 3 GO!") == "Whoa, chill out!"

  test "only numbers":
    check hey("1, 2, 3") == "Whatever."

  test "question with only numbers":
    check hey("4?") == "Sure."

  test "shouting with special characters":
    check hey("ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!") == "Whoa, chill out!"

  test "shouting with no exclamation mark":
    check hey("I HATE YOU") == "Whoa, chill out!"

  test "statement containing question mark":
    check hey("Ending with ? means a question.") == "Whatever."

  test "non-letters with question":
    check hey(":) ?") == "Sure."

  test "prattling on":
    check hey("Wait! Hang on. Are you going to be OK?") == "Sure."

  test "silence":
    check hey("") == "Fine. Be that way!"

  test "prolonged silence":
    check hey("          ") == "Fine. Be that way!"

  test "alternate silence":
    check hey("\t\t\t\t\t\t\t\t\t\t") == "Fine. Be that way!"

  test "multiple line question":
    check hey("\nDoes this cryogenic chamber make me look fat?\nno") == "Whatever."

  test "starting with whitespace":
    check hey("         hmmmmmmm...") == "Whatever."

  test "ending with whitespace":
    check hey("Okay if like my  spacebar  quite a bit?   ") == "Sure."

  test "other whitespace":
    check hey("\n\r \t") == "Fine. Be that way!"

  test "non-question ending with whitespace":
    check hey("This is a statement ending with whitespace      ") == "Whatever."
import strutils

proc isNothing(s: string): bool =

proc isQuestion(s: string): bool =
    s[^1] == '?'

proc isYelling(s: string): bool =
    s.isUpperAscii(true) and not isQuestion(s)

proc isYellingQuestion(s: string): bool =
    s.isUpperAscii(true) and isQuestion(s)

proc hey*(input: string): string =
    let input = input.strip()
    if isNothing(input):
        return "Fine. Be that way!"
    elif isYellingQuestion(input):
        return "Calm down, I know what I'm doing!"
    elif isYelling(input):
        return "Whoa, chill out!"
    elif isQuestion(input):
        return "Sure."
        return "Whatever."

Community comments

Find this solution interesting? Ask the author a question to learn more.

What can you learn from this solution?

A huge amount can be learned from reading other peopleโ€™s code. This is why we wanted to give exercism users the option of making their solutions public.

Here are some questions to help you reflect on this solution and learn the most from it.

  • What compromises have been made?
  • Are there new concepts here that you could read more about to improve your understanding?