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Well Suited

4:10 with Ben Deitch

In this video we'll see how we can print out the suits just like any other character!

Unicode Suits

        diamonds -> "\u2666"
        clubs -> "\u2663"
        hearts -> "\u2665"
        spades -> "\u2660"

Project Files

All right on to the suparameter. 0:00
Did you know that each of the suits is included in Unicode? 0:03
Meaning that each suit is a character that we can type out. 0:07
Let's start by replacing our suit and 0:11
our print string with a dollar sign and then brackets. 0:13
Inside the brackets, let's call a function that doesn't exist yet 0:18
named getSuitChar and pass in the suit. 0:22
Then let's use Alt+Enter to create the function. 0:28
And after it's created, let's delete the brackets and 0:36
then set this function equal to when suit and then add brackets. 0:40
And inside our when statement, 0:47
let's start by checking if the suit is equal to diamonds. 0:49
And if it is, Then let's return the Unicode 0:53
character for diamonds, which is \u2666. 1:00
Next hit command or Ctrl+D three times to duplicate this line. 1:06
And then let's change these extra 1:14
diamonds to clubs, hearts and spades. 1:19
And let's change the Unicode characters to u2663 for 1:24
clubs, u2665 for hearts and u2660 for 1:30
spades, these are all in the teacher's notes as well. 1:35
Finally, since we're counting on this when statement to always return something 1:42
let's add an else. 1:47
And if we get anything else, 1:49
let's return a string that says incorrect suit then let's run the app. 1:52
And sweet, I got the ten of spades. 2:00
My favorite. 2:02
Last but not least, let's deal with the face up property. 2:03
If a card is face up, we should be able to see it. 2:07
But if it's face down, we shouldn't be able to tell what card it is. 2:10
So really, I shouldn't be able to tell that this card is a ten of spades. 2:14
To fix this, let's first take the face up property out of our print string. 2:20
Then let's add a line above the return and type if faceUp. 2:29
And then put our return statement inside the brackets. 2:37
Next let's add an else and if it's not face up, let's return three Xs. 2:41
Great, but before we move on, let's make this two string function a lot smaller. 2:51
To do that, I first need to tell you about the ternary operator and column. 2:56
Remember the Ternary Operator? 3:01
It's these guys. 3:03
They let us do a conditional statement on only one line. 3:04
See, the thing is, Kotlin doesn't have a Ternary Operator. 3:07
Instead, with Kotlin, an if statement returns a value. 3:11
So instead of using some weird syntax, we can just use if and 3:16
else like we're used to. 3:20
So to get this down to one line, 3:22
let's first delete the outside brackets and then add an equal sign. 3:24
Then, since if statements already return values, let's delete the return keywords. 3:30
And finally, let's get rid of the brackets and put everything on one line. 3:41
Awesome, our two string function is ready for action. 3:59
Now let's give it some exercise by printing out the entire game board instead 4:03
of just the top card in our deck. 4:07

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