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4d47's solution

to Two Fer in the JavaScript Track

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Instructions
Test suite
Solution

Two-fer or 2-fer is short for two for one. One for you and one for me.

"One for X, one for me."

When X is a name or "you".

If the given name is "Alice", the result should be "One for Alice, one for me." If no name is given, the result should be "One for you, one for me."

Setup

Go through the setup instructions for Javascript to install the necessary dependencies:

https://exercism.io/tracks/javascript/installation

Requirements

Install assignment dependencies:

$ npm install

Making the test suite pass

Execute the tests with:

$ npm test

In the test suites all tests but the first have been skipped.

Once you get a test passing, you can enable the next one by changing xtest to test.

Source

https://en.wikipedia.org/wiki/Two-fer

Submitting Incomplete Solutions

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

two-fer.spec.js

import twoFer from './two-fer';

describe('twoFer()', () => {
  test('no name given', () => {
    const name = '';
    expect(twoFer(name)).toEqual('One for you, one for me.');
  });

  xtest('a name given', () => {
    const name = 'Alice';
    expect(twoFer(name)).toEqual('One for Alice, one for me.');
  });

  xtest('another name given', () => {
    const name = 'Bob';
    expect(twoFer(name)).toEqual('One for Bob, one for me.');
  });
});
module.exports =
    
class {
  twoFer(who = 'you') {
    return `One for ${who}, one for me.`
  }
}

What can you learn from this solution?

A huge amount can be learnt from reading other people’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 I could read more about to develop my understanding?