Week 05 Day 2 - Function Junction

[gstark]

Objectives

After completing this assignment, you should be able to:

• Demonstrate understanding of types, functions, argument-handling, loops, and conditional statements

Requirements

1. Fork this repository to your own account.
2. Change into your training directory
3. Clone your repository: hub clone function-junction
4. Change into your project's directory: cd function-junction
5. Install the dependencies: yarn install (or just yarn for short)
6. Open in Code: code .
7. Start the test runner: yarn test
8. Open src/functions.test.js and work on functions until tests pass.
9. Commit and push your work to GitHub.
10. Turn in the URL to your GitHub repo.

Explorer Mode

• [ ] All tests passing
• [ ] No linter warnings
• [ ] Turn in the homework using the URL to your repository on Github.

Adventure Mode

• [ ] If you used "built-in" JavaScript methods like String.reverse() or Array.max() to solve these problems, try implementing them from scratch.
• [ ] Vice-versa: if you implemented your solutions from scratch, look in the documentation linked below to see if JavaScript has any built-in functions to help solve these problems.

Epic Mode

• [ ] Expand the sum and max functions to take arrays instead of numbers and update the tests so they pass.
• [ ] Create your own simple functions with tests.
• [ ] Anytime in your code that you used a for loop or a while loop, convert it to use a map, filter or reduce.

Additional Resources

Reference the documentation on MDN to find what kind of helpful functions might already be on Array and String in JavaScript.

• String Functions on MDN.
• Array Functions on MDN.

[benjaminkent]

all tests pass. https://github.com/benjaminkent/function-junction

[gstark]

  if (
    a === 'a' ||
    a === 'e' ||
    a === 'i' ||
    a === 'o' ||
    a === 'u' ||
    a === 'A' ||
    a === 'E' ||
    a === 'E' ||
    a === 'E' ||
    a === 'U'
  ) {
    return true
  } else {
    return false
  }
}

can be reduced to

const isVowel = a => {
  return (
    a === 'a' ||
    a === 'e' ||
    a === 'i' ||
    a === 'o' ||
    a === 'u' ||
    a === 'A' ||
    a === 'E' ||
    a === 'E' ||
    a === 'E' ||
    a === 'U'
  )
}

since

if (condition) {
  return true
} else {
  return false
}

is the same as

return condition

[gstark]

Your homework was marked: Meets Expectations

“Great job!” — via Jason L Perry