00:00:03a go programming tutorial series this
00:00:05tutorial series is going to be practical
00:00:08and applied but also over the basics of
00:00:10go the reason why I want to do it that
00:00:13way is because the go programming
00:00:15language I mean all programming
00:00:16languages are like this but the go
00:00:18programming language because it’s kind
00:00:20of a low-level programming language it’s
00:00:22kind of the case that you could go
00:00:24through a basics tutorial for something
00:00:27like go and feel like you kind of
00:00:29understood what was going on and then
00:00:31you actually go to try to apply it to a
00:00:32project or something and you’re like I
00:00:35have no idea how to do this right so so
00:00:38my hope is that each time we learn
00:00:41something we’re going to apply it to an
00:00:42overarching objective and project and my
00:00:45hope is that that’ll that’ll make
00:00:47learning go much much simpler but still
00:00:50even at the end of that the best way to
00:00:51learn something is to keep trying to use
00:00:53it to solve various types of tasks so
00:00:55some of that’s actually still going to
00:00:57be on you but hopefully I can make some
00:00:59of that initial process easier so first
00:01:02of all why go why would someone like me
00:01:04be interested and go why might you be
00:01:06interested and go basically go is built
00:01:10from the ground up it was built by
00:01:11Google it was built to solve Google
00:01:13types of problems right so basically go
00:01:16is for scale this would be like a
00:01:19systems language web development
00:01:21language anything you want to scale
00:01:22anything you want to be super efficient
00:01:25but you might not want to write in C++
00:01:26so for example the reason I’m interested
00:01:30in go is mainly for web development so a
00:01:32website like Python programming net for
00:01:34example it’s built in Python using flask
00:01:37and it’s not the slowest website in the
00:01:40world but it’s also not the fastest
00:01:42website in the world it could we could
00:01:43make some serious speed gains there and
00:01:45in web development the difference of 100
00:01:48mil or 100 milliseconds is a major
00:01:50difference especially when you scale
00:01:51that out to millions of users so it you
00:01:54know the speed doesn’t just affect user
00:01:57the user experience but it also affects
00:02:00your bottom line how much are you paying
00:02:02for processing cost basically right in
00:02:04hosting time and all of that so anywhere
00:02:07you can make gains in web development
00:02:09it’s usually a very good thing and then
00:02:10the bigger the scale the better those
00:02:12are for you also in terms of just
00:02:15anything where you need it to be super
00:02:16fast or super efficient go is pretty
00:02:18much C++ speeds so anywhere well that’s
00:02:22a good thing to you maybe you’re in
00:02:23high-frequency trading or something like
00:02:25that where you you really want to be as
00:02:26quick as possible but maybe you don’t
00:02:29want to write something as tedious as C
00:02:30so go is gonna be static typed like C++
00:02:35unlike Python so every time like in
00:02:38Python every time the interpreter hits a
00:02:40variable has to kind of figure out what
00:02:42is that variable and that variable could
00:02:43change types and stuff like that and by
00:02:45that I mean like int sand floats and
00:02:47strings stuff like that
00:02:48whereas in go that’s not the case so it
00:02:51doesn’t need to know all there it
00:02:53doesn’t it basically doesn’t need to
00:02:54figure those things out for you
00:02:57basically you are gonna tell it what
00:03:00type is what type is certain variables
00:03:02and all that kind of stuff so that’s
00:03:03going to give you some speed also it was
00:03:05just built from the ground up for
00:03:06concurrency whereas Python was kind of
00:03:08Python was built from the ground up to
00:03:10be a teaching language right and it just
00:03:13so happens that it’s so fun and so easy
00:03:15to program with that it got really
00:03:16really popular but that’s what Python
00:03:20was made for so pythons got the global
00:03:22interpreter lock kind of restricting it
00:03:24to one thread yes there are ways around
00:03:25that but that’s like band-aids over a
00:03:27bigger issue whereas go is just
00:03:31concurrent right out of the box so stuff
00:03:33like that is what’s gonna make go faster
00:03:35but go is much more pleasant to write
00:03:37then something like C++ anyways with
00:03:41that let’s go ahead and get into it I
00:03:43think you’ll learn a lot more about
00:03:44whether or not you like go by actually
00:03:47using go and seeing what you think from
00:03:49there so to get go it’s just go to
00:03:52golang.org head to the downloads and
00:03:55download whatever fits your needs so if
00:03:57you’re on Windows it’s just a simple
00:03:58Installer on Mac I have no idea its
00:04:00package I don’t know how installing
00:04:02that’s going to go for you I don’t use
00:04:03Mac and then on Linux it’s a total
00:04:05download that install that the only
00:04:07thing I’ll add is on Linux you’ll want
00:04:09to go ahead and export that path
00:04:11permanently if you don’t know how to do
00:04:13that I’ll put a link in the description
00:04:14to the tech space right up in this
00:04:15tutorial and you can head there for
00:04:19instructions on how to set it up on
00:04:21Linux a little more easily
00:04:24other than that you’re gonna need some
00:04:25sort of editor I’m gonna be using
00:04:27sublime text people like to make big
00:04:29deals about editors you can use whatever
00:04:30you want you can use notepad for that
00:04:32matter it doesn’t really matter sublime
00:04:35text is a great editor though so you can
00:04:37use that if you want that’s what I’m
00:04:39gonna be using and let’s go ahead and
00:04:41write our very first go program so I’m
00:04:45gonna go ahead and move this out of the
00:04:46way and I’ve just got a simple directory
00:04:49called go tux so I’m going to go ahead
00:04:50and just make a new file and I’m just
00:04:53gonna call it go to go yes we’re gonna
00:04:59open that up and we’re gonna get ready
00:05:00so the first thing in every go program
00:05:02it’s gonna be a part of a package and
00:05:04for the most part you’re gonna find
00:05:06yourself pretty much writing package
00:05:08mean every time until you start writing
00:05:10bigger things
00:05:11so package main and then you’re gonna
00:05:15have your imports for now we’re just
00:05:16going to import fmt and all your imports
00:05:19go in double quotes and something to get
00:05:22used to especially if you’re coming from
00:05:23Python which I assume many people
00:05:25viewing this or from my channel mainly
00:05:27watch Python you have to use double
00:05:30quotes also you’re putting quotes around
00:05:32your imports but get rid of single
00:05:35quotes you’re gonna be done using them
00:05:37with with go also if I if I slip up and
00:05:40call go python and all that kind of
00:05:41stuff I’m sorry it’s gonna happen I’m
00:05:43also probably gonna type like print a
00:05:45few times I’m also gonna make quite a
00:05:48few pun puns about go so get used to it
00:05:52so once you’ve done your imports we’re
00:05:53just gonna import fmt which is like
00:05:55format basically it’s gonna be how we
00:05:57can print something out basically we’re
00:05:59ready to build out our functions so to
00:06:01actually write a function you’re gonna
00:06:04say func that just start your function
00:06:06you’ve got your function name
00:06:08you’ve got parameters and then the
00:06:10function comes after that
00:06:11again it’s not Python unfortunately
00:06:13we’ve got braces so like many other
00:06:16languages so and then in here you write
00:06:19your code we’re just gonna have some
00:06:20simple code it’s just going to be FM T
00:06:22capital P print line and then we’re just
00:06:25going to say again in double quotes
00:06:27don’t use single quotes anymore welcome
00:06:29to go awesome so we can go ahead and
00:06:33save that and let’s run this program
00:06:35real quick so we’re going to come
00:06:37here I’m gonna open up the command line
00:06:39and to run it you just do go run and
00:06:43then whatever the file name is so for me
00:06:45it’s go touch go go hey dinner and but
00:06:49welcome to go so that’s going to go
00:06:51ahead and compile and run it for you at
00:06:53the same time so so that’s that not too
00:06:57much I really want to cover here until
00:06:59we get to the next tutorial like I said
00:07:01there’s just like a little things that
00:07:03you’ll have to get used to also you
00:07:04might be wondering why did the main
00:07:06function even run like we didn’t ask it
00:07:07to run great question so we’ll be
00:07:10talking about stuff like that in the
00:07:11next tutorial also be explaining a lot
00:07:13of little smaller things here that you
00:07:15might not have noticed if you have
00:07:17questions comments concerns go puns
00:07:19whatever feel free to steam them below
00:07:21otherwise I’ll see you in the next
00:07:22tutorial
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