Saturday Unbootcamp Weekend 2

CRUD

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This is…

• Very much the sort of thing we were doing in my SQL class (Fall ‘16) and a bit of in Data Structures/ C++ class this past semester.

Firebase API reference

Firebase API reference documentation

Learn some JQuery

• Useful, particularly for front-end

Anonymous Functions

• Higher-Order Functions
• Call-backs
• Lambdas
• FP
• (six degrees of Kevin Bacon/ FP) :)

  button.addEventListener("click", function(){console.log(2 + 2)});
  dbRef.on("value", function(dataSnapshot){dbRef.remove(dataSnapshot)});
  

Katas

function greet(language) {
	var lang = 
  {
  english: 'Welcome',
  czech: 'Vitejte',
  danish: 'Velkomst',
  dutch: 'Welkom',
  estonian: 'Tere tulemast',
  finnish: 'Tervetuloa',
  flemish: 'Welgekomen',
  french: 'Bienvenue',
  german: 'Willkommen',
  irish: 'Failte',
  italian: 'Benvenuto',
  latvian: 'Gaidits',
  lithuanian: 'Laukiamas',
  polish: 'Witamy',
  spanish: 'Bienvenido',
  swedish: 'Valkommen',
  welsh: 'Croeso'
  }
  if (!(language in lang)){
    return 'Welcome'
  } 
  else{
  var l = lang[language];
    return l;
    }
}

Another one

• Nicknames : if letter.length < 4 : return “too short” if ends with a vowel after 3 letters taken out make it length four. Otherwise, make it three letters long

function nicknameGenerator(letter){
  if (letter.length < 4){
    return "Error: Name too short"
   }
   else{
     if ((letter[2] == 'a') || (letter[2] == 'e') || (letter[2] == 'i') ||
     (letter[2] == 'o') || (letter[2] == 'u')){
       return letter.slice(0, 4);
     }
     else{
     return letter.slice(0, 3);
     }
     return;
   }

Bitwise

• Evens and Odds without using “%”

def is_even(n):
    if n / 2.0 == int(n / 2):
        return True
    else:
        return False  

Office Sabattical

• If x.length (only count letters in the word “sabbatical”) and val and happ < 22 You can go to sabbatical… Else “Get back to work!”

function sabb(x, val, happ){
  var x1 = 0;
  for (var i = 0; i < x.length; i++)
  {
    if (x[i] == 's')
    {
      x1 = x1 + 1
    }
    else if (x[i] == 'a'){
      x1 = x1 + 1
    }
    else if (x[i] == 'b'){
      x1 = x1 + 1
    }
    else if (x[i] == 't'){
      x1 = x1 + 1 
    }
    else if (x[i] == 'i'){
      x1 = x1 + 1
    }
    else if (x[i] == 'c'){
      x1 = x1 + 1
    }
    else if (x[i] == 'l'){
      x1 = x1 + 1
    }
  }
  
  var total = x1 + val + happ;
  
  if (total > 22){
    return "Sabbatical! Boom!";
  }
  else{
    return "Back to your desk, boy.";
  }
}

Ruby Bug Fix

def divide_numbers(x, y)
 return ( x * 1.0 / y * 1.0) * 1.00
end

Make s1, s2 match output

• input : “FizZ”, “buZZ”
• output : “zzUB@@@zZIffIZz”

def reverseAndMirror(s1,s2):
    s_ = []
    s3 = list(s1)
    for i in s3:
      if i == i.upper():
        s_.append(i.lower())
      else:
        s_.append(i.upper())
    s = ('').join(s_)
    srev = s[::-1]
    
    s4 = []
    s5 = list(s2)
    for i in s5:
      if i == i.upper():
        s4.append(i.lower())
      else:
        s4.append(i.upper())
    first = ('').join(s4)
    head1 = first[::-1]
    
    final = head1 + '@@@' + srev + s 
    return final

Notes/ Updates

• Probably will go through the Firebase Codelabs this week.

• Zeeman Effect.

• Giant-impact hypothesis. I wanted to know on the way home, if it was possible that the Earth had rings at some point. So my mentor told me about this hypothesis.

Found out

• Two former JPL interns, and one SpaceX employee were all chosen to be astronauts! How cool is that!? Yes, you too can be an astroanut!

• I personally have no desire to be an astronaut, but I find the engineering of Space to be fascinating, of course. I watched “Hidden Figures” (finally), and it was trippy to understand a lot of what they were talking about in the movie. It’s really weird that a lot of the time, in a documentary on Space, when someone is searching for the word to say, I just say it, and then a second later, the person being interviewed will say it LOL. Too many rocket scientist friends? My mentor(at JPL)’s in Frankfurt for the next two to three weeks, but I’m sure we’ll catch up once he gets back.

• Also watched documentaries on the Russian Kursk (Modern Marvels), the US Saturn V and Atlas V.

• The Atlas V is special. See Scott Manley’s “How the Atlas Rocket evolved Over 60 years”. Really interesting!

• Filled out a form geared towards individuals in the tech community. That was fun!

• Gearing up this week for a robot workshop and for our first Mathematics for CS Meetup. The Meetup will be informal (just four of us) but hopefully it will grow.