Heads up! To view this whole video, sign in with your Courses account or enroll in your free 7-day trial. Sign In Enroll

Computer Basics

Preview

Start a free Courses trial
to watch this video

Sign up for Treehouse

Programming Paradigms

4:29 with Joy Kesten

A paradigm is a way of doing something, so a programming paradigm is a way of programming. A few of the common programming paradigms are procedural, functional, and object-oriented programming. Here at Treehouse we primarily teach object-oriented programming. Let's take a very brief tour of these practices and then look at the similarities between the languages we teach at Treehouse.

We'll begin coding by printing "Hello Treehouse!" to the screen, like a wise nun-turned-nanny once said in The Sound of Music: “When we read we begin with ABC. When we sing we begin with Do Re Mi.”

This video doesn't have any notes.

Related Discussions

Have questions about this video? Start a discussion with the community and Treehouse staff.

Sign up

    Related Discussions

    Have questions about this video? Start a discussion with the community and Treehouse staff.

    Sign up

    A paradigm is a way of doing something, so 0:00
    a programming paradigm is a way of programming. 0:02
    A few common programming paradigms are procedural, functional, 0:05
    and object-oriented. 0:11
    Here at Treehouse, we primarily teach object-oriented programming. 0:12
    Let's take a brief tour of these practices and 0:17
    then look at the similarities between the languages we teach at TreeHouse. 0:19
    The procedural approach describes step by step the procedures that we 0:24
    should follow to solve a specific problem. 0:28
    C is a classic procedural language, [SOUND] and 0:31
    here's what C [SOUND] looks like. 0:34
    This code says to print Hello World! 0:36
    on the screen. 0:38
    Just like you learn the alphabet on the first day of kindergarten, 0:40
    the first thing you learn in code is to print the phrase, Hello World!, 0:43
    to the screen. 0:47
    It's obviously not the only way to get started, but it's a good, 0:49
    logical first step. 0:52
    But here at Treehouse, we always like to do things a little bit differently. 0:55
    So instead, what do you think this would print out? 0:59
    [SOUND] If you're thinking Hello Treehouse!,. 1:02
    you're correct. 1:05
    [SOUND] In functional programming, 1:07
    you look at program somewhat like mathematical functions. 1:09
    The function receives some input or 1:13
    information, and then uses that information to create an output. 1:15
    Lisp, Racket and Scheme are examples of functional programming languages. 1:19
    [SOUND] Now let's try printing [SOUND] Hello Treehouse! 1:24
    in Racket. 1:26
    Can you see where to put the words Hello Treehouse? 1:27
    That's right, it's in between the quotes, same as in the C language. 1:32
    Lots of programming languages use [SOUND] quote marks to show groups of characters, 1:36
    something that's usually called a string. 1:40
    [SOUND] Object-oriented programming is a very popular type of 1:43
    programming because it often uses code objects to mirror real-world objects. 1:47
    Each code object is usually made up of two things, attributes and methods. 1:52
    Attributes represent the data associated with that object, like a name, 1:58
    color or size. 2:03
    And the methods are actions you can perform with the object or its attributes. 2:05
    [SOUND] To give you a real-world example of this, say the object is a puppy. 2:09
    [SOUND] A puppy has attributes like gender, weight and 2:15
    hair color, [SOUND] and actions such as eat, sleep and go for a walk. 2:19
    If a puppy is the object, gender, weight and hair are data. 2:23
    And eating, sleeping and going on walks are actions. 2:28
    [SOUND] Here at Treehouse, we [SOUND] primarily teach 2:32
    object-oriented programming using languages [SOUND] like Java, 2:35
    JavaScript, Objective-C, PHP, Python, Ruby and Swift. 2:39
    Let's see if we can do the same exercise we did in C and 2:43
    Racket in some object-oriented languages as well. 2:47
    [SOUND] Can you see where to put Hello Treehouse! 2:50
    in Python? 2:53
    [BLANK_AUDIO] 2:54
    If you guessed between the double [SOUND] quotes, you'd be absolutely correct. 2:56
    Let's look at the [SOUND] same code in Ruby. 3:01
    Where do you think we should put Hello Treehouse! 3:04
    here? 3:05
    [BLANK_AUDIO] 3:06
    [SOUND] If you guessed in between the quotes again, you're right again. 3:08
    Let's look at that same code in [SOUND] PHP. 3:13
    This might be a little more cryptic. 3:16
    Where do you think our phrase goes this time? 3:18
    [BLANK_AUDIO] 3:20
    [SOUND] You're getting really good at this. 3:24
    So let's look at one more example in Objective-C. 3:27
    [SOUND] 3:30
    [BLANK_AUDIO] 3:32
    Can you sift through the code to see where to write Hello Treehouse! 3:37
    this time? 3:41
    That's right, it's [SOUND] in between the quotes. 3:42
    Those quotes are a bit of a giveaway, huh? 3:45
    [SOUND] There are a lot of similarities among the languages. 3:48
    And many programming languages are hybrids of several programming paradigms. 3:51
    Python, Java, and PHP, for example, are all object-oriented languages, but 3:56
    they also have functional and procedural aspects as well. 4:01
    Choosing a programming language can be hard. 4:05
    But know you can write a program using any of the programming languages you saw it in 4:08
    the examples, or even ones you didn't. 4:12
    The trick is that some languages make writing certain types of 4:15
    programs easier than others. 4:19
    To give you some more practice, 4:21
    see if you can print yourself a personal message in a few different languages. 4:22
    If you get stuck, look for the hints to help guide you 4:26

    You need to sign up for Treehouse in order to download course files.

    Sign up

      You need to sign up for Treehouse in order to set up Workspace

      Sign up