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HTML

              
                
              
            
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CSS

              
                
              
            
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JS

              
                const _ = {};
const rooms = [
  "Billiard Room",
  "Kitchen",
  "Library",
  "Conservatory",
  "Hall",
  "Dining Room"
];
const weapons = [
  "Revolver",
  "Knife",
  "Lead Pipe",
  "Candlestick",
  "Rope",
  "Wrench"
];
const suspects = [
  "Mr. Green",
  "Mrs. Peacock",
  "Prof. Plum",
  "Mrs. White",
  "Miss Scarlett",
  "Col. Mustard"
];

/* ==========================================================================
  _.transform: Iterates over a collection, invoking the iteratee each time.
  The iteratee is invoked with four arguments: (accumulator, value, key, object).

  Definition: _.transform(object, iteratee, accumulator)

  Example:

  const counts = _.transform(
    {
      rooms: ['Billiard Room', 'Kitchen', 'Library', 'Conservatory', 'Hall', 'Dining Room'],
      weapons: ['Revolver', 'Knife', 'Lead Pipe', 'Candlestick', 'Rope', 'Wrench'],
      suspects: ['Mr. Green', 'Mrs. Peacock', 'Prof. Plum', 'Mrs. White', 'Miss Scarlet', 'Col. Mustard']
    },
    (result, value, key) => {
      result[key] = value.length
    },
    {}
  )

  console.log(counts)
  // => { rooms: 6, weapons: 6, suspects: 6 }

  Instructions: Implement the transform method to collect up rooms, weapons,
  and suspects we have found with our clues (and those we haven't yet)!

========================================================================== */
const gameData = [...rooms, ...weapons, ...suspects];
const cluesSoFar = {
  Revolver: true,
  Knife: true,
  "Billiard Room": true,
  "Miss Scarlett": true,
  Hall: true
};

_.transform = function(object, iteratee, accumulator) {
  // TODO: Write the solution here

};

const summary = _.transform(
  gameData,
  (accumulator, key) => {
    if (cluesSoFar[key]) {
      accumulator.found.push(key);
    } else {
      accumulator.notFound.push(key);
    }
    return accumulator;
  },
  { found: [], notFound: [] }
);

// We should have found 3 clues
console.log("1. We should have found 5 clues:", summary.found.length === 5);

// We should have 15 rooms, weapons, and suspects unaccounted for
console.log(
  "2. We should have 13 rooms, weapons, and suspects unaccounted for:",
  summary.notFound.length === 13
);

              
            
!
999px

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