quiz-1.md

quiz-1.md

So you think you wanna be a web developer...

Fork this, update your copy with answers.

They don't need to be precise - pseudo-code is fine in most cases.

Some questions don't have correct answers.


Submit your answers to [email protected]


  FROM: [email protected]

  SUBJECT: [dojo4-quiz] quiz-1

  BODY:

    https://gist.github.com/to-your-submission

---

==========================================================

1. is this broken in html5? if so why? ==========================================================

  <div id='teh_javascripts' />

---

teh answerz...

========================================================== 2. write an http GET request for the url

  'http://domain.com:4242/foo/bar/baz.html'

---

teh answerz...

========================================================== 3. in any language you choose, write this to run in parallel

  numbers = 20, 1

  results = []

  numbers.each do |number|
    results.push( parallelize{ number * 2 } )
  end


  sum = reduce( results )

---

teh answerz...

========================================================== 4. in any language you choose, write this to run in parallel on multiple cores

  numbers = 20, 1

  results = []

  numbers.each do |number|
    results.push( parallelize{ number * 2 } )
  end


  sum = reduce( results )

---

teh answerz...

========================================================== 5. is this broken in html5?, why?

  <label for='user.email'>
  <input name='user.email'>

---

teh answerz...

========================================================== 6. what is value of 'status'

  if @not_modified
    render :status => status
  end

---

teh answerz...

========================================================== 7. is this javascript broken? if so, why?

  var submit = document.getElementById("submit");

  submit.click();

---

teh answerz...

========================================================== 8. which is better? why?

<!-- A -->

  <table>
    <tr>
      <td class='key' style='width:33%'>
        {{ dynamic_content_for(:key) }}
      </td>
      <td class='val'>
        {{ dynamic_content_for(:val) }}
      </td>
    </tr>
  </table>

<!-- B -->

  <div class='fluid grid'>
    <div class='row'>
      <span class='key width33'>
        {{ dynamic_content_for(:key) }}
      </span>
      <span class='val'>
        {{ dynamic_content_for(:val) }}
      </span>
    </div>
  </div>

---

teh answerz...

========================================================== 9. which is better? why?

# A

  if var == 42
    "..."
  end

# B

  if 42 == var
    "..."
  end

---

teh answerz...

========================================================== 10. describe steps to debug this problem

  @response =
    http_request(url, :method => method, :params => params, :headers => headers)

  if @response.ok?
    ship_it!
  else
    debugger!
  end

---

teh answerz...

========================================================== 11. which is better? why?

# A

  if foo.bar.baz
    '...'
  end

# B

  if foo
    if foo.bar
      if foo.bar.baz
        '...'
      end
    end
  end

---

teh answerz...

========================================================== 12. is this javascript broken? if so, why?

  ajax(url)({

    'method'  : 'POST',

    'params'  : params,

    'headers' : headers

  });

---

teh answerz...

========================================================== 13. what color is this?

  '#FFE'

---

teh answerz...

========================================================== 14. what number is this?

  0b101010

---

teh answerz...

========================================================== 15. describe an algorithm to detect the 'edges' in these pixels

  0 0 0 0 0 0 
  0 0 1 1 1 0 
  0 1 1 1 1 0 
  0 1 1 1 0 0 
  0 0 0 0 0 0 

---

teh answerz...

========================================================== 15. what does @X represent?

  $color = [@X, @R, @G, @B].as_hex

 

---

teh answerz...

========================================================== 16. what are the advantages of static linking?

  export HINT=$LD_RUN_PATH

---

teh answerz...

========================================================== 17. wtf is this javascript doing?

     var uploader = new qq.FileUploader(options);

     var image_ids = [];

     uploader._uploadFileList = function(){
       image_ids = [];
       var args = Array.prototype.slice.call(arguments);
       var result = qq.FileUploaderBasic.prototype._uploadFileList.apply(uploader, args);
       return(result);
     };

---

teh answerz...

========================================================== 18. what does this code do?

  jQuery('.help').find('a').attr('tabindex', '-1');

---

teh answerz...

========================================================== 19. how would you solve this problem?

  ~ > run_api_tests_locally


    "FAIL: you must access teh API from a box on EC2 with IP 1.2.3.4!"

---

teh answerz...

========================================================== 20. which is better? why?

// A

  User.prototype.first_name = function(){
    return this.name.split(/\s+/)[0];
  };

// B

  User.prototype.first_name = function(){
    return User.first_name_for(this.name);
  };

  User.first_name_for = function(name){
    return name.split(/\s+/)[0];
  };

---

teh answerz...