what’s going on everybody and welcome to part five of the go tutorial series in
part five of the go tutorial series in
part five of the go tutorial series in this series what we’re gonna be talking
this series what we’re gonna be talking
this series what we’re gonna be talking about is at least the basics of the
about is at least the basics of the
about is at least the basics of the built in go web server that you have at
built in go web server that you have at
built in go web server that you have at your disposal so this will be the very
your disposal so this will be the very
your disposal so this will be the very start of our our web app that we’re
start of our our web app that we’re
start of our our web app that we’re gonna be building throughout this
gonna be building throughout this
gonna be building throughout this tutorial so first of all I just started
tutorial so first of all I just started
tutorial so first of all I just started with a empty script just because I just
with a empty script just because I just
with a empty script just because I just want to start fresh so we’re gonna say
want to start fresh so we’re gonna say
want to start fresh so we’re gonna say package mean as usual and then we’re
package mean as usual and then we’re
package mean as usual and then we’re gonna go ahead and import and we’re
gonna go ahead and import and we’re
gonna go ahead and import and we’re gonna have formats and you just
gonna have formats and you just
gonna have formats and you just parentheses format and then finally net
parentheses format and then finally net
parentheses format and then finally net slash HTTP this is all these as part of
slash HTTP this is all these as part of
slash HTTP this is all these as part of your standard library so you should have
your standard library so you should have
your standard library so you should have both of those now we’re going to go
both of those now we’re going to go
both of those now we’re going to go ahead and do is we’re gonna create our
ahead and do is we’re gonna create our
ahead and do is we’re gonna create our main function so func main and then in
main function so func main and then in
main function so func main and then in our main function we’re gonna create
our main function we’re gonna create
our main function we’re gonna create begin creating handlers so basically in
begin creating handlers so basically in
begin creating handlers so basically in web development you’re gonna have
web development you’re gonna have
web development you’re gonna have basically you know something has to take
basically you know something has to take
basically you know something has to take that URL that someone enters in and it’s
that URL that someone enters in and it’s
that URL that someone enters in and it’s gonna have some sort of path to it and
gonna have some sort of path to it and
gonna have some sort of path to it and then you have to take that path and then
then you have to take that path and then
then you have to take that path and then figure out what kind of function
figure out what kind of function
figure out what kind of function corresponds to that path so the thing
corresponds to that path so the thing
corresponds to that path so the thing that’s going to do that is going to be
that’s going to do that is going to be
that’s going to do that is going to be the the handler so we’re going to use
the the handler so we’re going to use
the the handler so we’re going to use HTTP handle func
HTTP handle func
HTTP handle func and that’s going to take in the path
and that’s going to take in the path
and that’s going to take in the path that you want to use so in this case
that you want to use so in this case
that you want to use so in this case we’re just gonna use a forward slash
we’re just gonna use a forward slash
we’re just gonna use a forward slash which just a forward slash would be the
which just a forward slash would be the
which just a forward slash would be the index right the homepage right there is
index right the homepage right there is
index right the homepage right there is nothing there and then we’re gonna have
nothing there and then we’re gonna have
nothing there and then we’re gonna have whatever we’re gonna whatever function
whatever we’re gonna whatever function
whatever we’re gonna whatever function we want to run in this case it’s going
we want to run in this case it’s going
we want to run in this case it’s going to be index Handler that we want to run
to be index Handler that we want to run
to be index Handler that we want to run now it’s beyond actually handling
now it’s beyond actually handling
now it’s beyond actually handling functions we need to have we need our
functions we need to have we need our
functions we need to have we need our server right so we’re gonna actually
server right so we’re gonna actually
server right so we’re gonna actually serve so we’re an HTTP listen and serve
serve so we’re an HTTP listen and serve
serve so we’re an HTTP listen and serve and then we’re the first parameter here
and then we’re the first parameter here
and then we’re the first parameter here is gonna be on what port and then the
is gonna be on what port and then the
is gonna be on what port and then the second parameter is like server stuff
second parameter is like server stuff
second parameter is like server stuff that we don’t really need to deal with
that we don’t really need to deal with
that we don’t really need to deal with right now but you have to you have to
right now but you have to you have to
right now but you have to you have to pass something so we’re gonna pass nil
pass something so we’re gonna pass nil
pass something so we’re gonna pass nil which is the go equivalent based
which is the go equivalent based
which is the go equivalent based leave like pythons none okay so so this
leave like pythons none okay so so this
leave like pythons none okay so so this creates our server at basically
creates our server at basically
creates our server at basically localhost port 8000 so cool now we just
localhost port 8000 so cool now we just
localhost port 8000 so cool now we just need we need index handler you have to
need we need index handler you have to
need we need index handler you have to make that function so now we’re gonna go
make that function so now we’re gonna go
make that function so now we’re gonna go ahead and do is make that function so
ahead and do is make that function so
ahead and do is make that function so let’s say func
let’s say func
let’s say func index underscore Handler and then index
index underscore Handler and then index
index underscore Handler and then index handler is gonna have basically two
handler is gonna have basically two
handler is gonna have basically two parameters that are gonna come into it
parameters that are gonna come into it
parameters that are gonna come into it first it’s gonna have W which is gonna
first it’s gonna have W which is gonna
first it’s gonna have W which is gonna be your writer so in this is truly you
be your writer so in this is truly you
be your writer so in this is truly you can name this whatever you want it’s
can name this whatever you want it’s
can name this whatever you want it’s just if you look at other examples this
just if you look at other examples this
just if you look at other examples this is exactly how it’s always gonna be in
is exactly how it’s always gonna be in
is exactly how it’s always gonna be in people’s code so I’m gonna try to stick
people’s code so I’m gonna try to stick
people’s code so I’m gonna try to stick with that but you could name that
with that but you could name that
with that but you could name that whatever you wanted W and then obviously
whatever you wanted W and then obviously
whatever you wanted W and then obviously we have to give the type now the type
we have to give the type now the type
we have to give the type now the type here is gonna be a HTTP response writer
here is gonna be a HTTP response writer
here is gonna be a HTTP response writer title so that’s not a built-in go type
title so that’s not a built-in go type
title so that’s not a built-in go type that’s a custom type that we’re going to
that’s a custom type that we’re going to
that’s a custom type that we’re going to be talking about we’ll talk about how
be talking about we’ll talk about how
be talking about we’ll talk about how about more about those in the next
about more about those in the next
about more about those in the next tutorial I just wanted to you know not
tutorial I just wanted to you know not
tutorial I just wanted to you know not have a ride on my hands if we got to
have a ride on my hands if we got to
have a ride on my hands if we got to part five and still what we’re not
part five and still what we’re not
part five and still what we’re not actually applying anything so anyway a
actually applying anything so anyway a
actually applying anything so anyway a response writer so so you need you know
response writer so so you need you know
response writer so so you need you know the writer and that’s what’s gonna be
the writer and that’s what’s gonna be
the writer and that’s what’s gonna be input information onto the page and then
input information onto the page and then
input information onto the page and then you also need the request so we’re gonna
you also need the request so we’re gonna
you also need the request so we’re gonna say are four requests equals Astra’s
say are four requests equals Astra’s
say are four requests equals Astra’s HTTP requests
HTTP requests
HTTP requests now recall what is asterisk that’s not
now recall what is asterisk that’s not
now recall what is asterisk that’s not the memory address right the memory just
the memory address right the memory just
the memory address right the memory just would have been ampersand this is
would have been ampersand this is
would have been ampersand this is reading through HTTP request and then
reading through HTTP request and then
reading through HTTP request and then braces and we’re ready to rumble what do
braces and we’re ready to rumble what do
braces and we’re ready to rumble what do we want to do in our index handler well
we want to do in our index handler well
we want to do in our index handler well we’re gonna do format dot F print now
we’re gonna do format dot F print now
we’re gonna do format dot F print now this is a basically F print is gonna is
this is a basically F print is gonna is
this is a basically F print is gonna is gonna format whatever you specified it’s
gonna format whatever you specified it’s
gonna format whatever you specified it’s gonna format based on what you specify
gonna format based on what you specify
gonna format based on what you specify which we’re gonna say is the writer
which we’re gonna say is the writer
which we’re gonna say is the writer itself and then and then it’s gonna it’s
itself and then and then it’s gonna it’s
itself and then and then it’s gonna it’s got output whatever you asked it to okay
got output whatever you asked it to okay
got output whatever you asked it to okay so so it’s gonna using our response
so so it’s gonna using our response
so so it’s gonna using our response writer it’s going to write
writer it’s going to write
writer it’s going to write whoa go is meat awesome so um everything
whoa go is meat awesome so um everything
whoa go is meat awesome so um everything looks good to me let’s go ahead and run
looks good to me let’s go ahead and run
looks good to me let’s go ahead and run this bad boys so now let’s go over to
this bad boys so now let’s go over to
this bad boys so now let’s go over to our command line go run go types
our command line go run go types
our command line go run go types [Music]
[Music]
[Music] semicolon and found oh right
semicolon and found oh right
semicolon and found oh right that’s not necessary don’t put that
that’s not necessary don’t put that
that’s not necessary don’t put that comma there okay dragon all right I’ll
comma there okay dragon all right I’ll
comma there okay dragon all right I’ll approve such a thing to run okay so now
approve such a thing to run okay so now
approve such a thing to run okay so now you can head over to a browser head to a
you can head over to a browser head to a
you can head over to a browser head to a local host on port 8000 so one two seven
local host on port 8000 so one two seven
local host on port 8000 so one two seven zero zero one : 8000 well go is neat
zero zero one : 8000 well go is neat
zero zero one : 8000 well go is neat okay
okay
okay pretty cool one more thing I figure I
pretty cool one more thing I figure I
pretty cool one more thing I figure I might show you before before we leave
might show you before before we leave
might show you before before we leave and head on to the next tutorial is just
and head on to the next tutorial is just
and head on to the next tutorial is just just a little bit more about the handler
just a little bit more about the handler
just a little bit more about the handler so like let’s say you want to add a new
so like let’s say you want to add a new
so like let’s say you want to add a new page we’ll copy paste and let’s say you
page we’ll copy paste and let’s say you
page we’ll copy paste and let’s say you wanted to do I don’t know about
wanted to do I don’t know about
wanted to do I don’t know about so rather than index handler now it will
so rather than index handler now it will
so rather than index handler now it will be about and let’s just basically we can
be about and let’s just basically we can
be about and let’s just basically we can just copy this whole function paste call
just copy this whole function paste call
just copy this whole function paste call this about Handler and now it does the
this about Handler and now it does the
this about Handler and now it does the formatted print of you know expert web
formatted print of you know expert web
formatted print of you know expert web design by sometimes I can’t even spell
design by sometimes I can’t even spell
design by sometimes I can’t even spell my own name
my own name
my own name okay and we’ll break this so ctrl C to
okay and we’ll break this so ctrl C to
okay and we’ll break this so ctrl C to break hopefully you know that by now
break hopefully you know that by now
break hopefully you know that by now we’ll run fresh and now we can go to
we’ll run fresh and now we can go to
we’ll run fresh and now we can go to like the about page so slash expert web
like the about page so slash expert web
like the about page so slash expert web design by Centex
design by Centex
design by Centex awesome okay so that’s all for like a
awesome okay so that’s all for like a
awesome okay so that’s all for like a really basic example and like yeah I
really basic example and like yeah I
really basic example and like yeah I mean it’s you know for traditional hello
mean it’s you know for traditional hello
mean it’s you know for traditional hello world example which honestly was more
world example which honestly was more
world example which honestly was more like this go looks pretty good so as I
like this go looks pretty good so as I
like this go looks pretty good so as I was
was
was looking into go before I jumped in I
looking into go before I jumped in I
looking into go before I jumped in I found like a blog post I’m not gonna
found like a blog post I’m not gonna
found like a blog post I’m not gonna call anybody out I forget well who the
call anybody out I forget well who the
call anybody out I forget well who the name was that wrote it but as a blog
name was that wrote it but as a blog
name was that wrote it but as a blog post and it compared basic examples from
post and it compared basic examples from
post and it compared basic examples from go web development to flask with Python
go web development to flask with Python
go web development to flask with Python and Ruby on Rails and it kind of showed
and Ruby on Rails and it kind of showed
and Ruby on Rails and it kind of showed basic hello world examples and when you
basic hello world examples and when you
basic hello world examples and when you look at that you’re like oh wow that’s
look at that you’re like oh wow that’s
look at that you’re like oh wow that’s super simple like goes awesome but those
super simple like goes awesome but those
super simple like goes awesome but those are so impractical because it’s not
are so impractical because it’s not
are so impractical because it’s not actually like it’s just showing
actually like it’s just showing
actually like it’s just showing like the really you know truly basic
like the really you know truly basic
like the really you know truly basic information like this like when you
information like this like when you
information like this like when you actually what about when you want to
actually what about when you want to
actually what about when you want to start using like sessions and what about
start using like sessions and what about
start using like sessions and what about when you actually want to start like
when you actually want to start like
when you actually want to start like doing some sort of logical information
doing some sort of logical information
doing some sort of logical information right because at this point like yeah
right because at this point like yeah
right because at this point like yeah I’ll it goes actually super simple if
I’ll it goes actually super simple if
I’ll it goes actually super simple if you want to have like a static website
you want to have like a static website
you want to have like a static website with with go but why would you do that
with with go but why would you do that
with with go but why would you do that so so I promise it’s not actually this
so so I promise it’s not actually this
so so I promise it’s not actually this simple but anyway I think it’s weird
simple but anyway I think it’s weird
simple but anyway I think it’s weird when you look in the go community
when you look in the go community
when you look in the go community because everybody thinks that you can do
because everybody thinks that you can do
because everybody thinks that you can do everything you because you can do
everything you because you can do
everything you because you can do everything with with the standard
everything with with the standard
everything with with the standard library packages but eventually you’re
library packages but eventually you’re
library packages but eventually you’re gonna want something on top of that I
gonna want something on top of that I
gonna want something on top of that I think bubble see whenever you get
think bubble see whenever you get
think bubble see whenever you get through the end of this series maybe
through the end of this series maybe
through the end of this series maybe maybe you won’t so anyways that’s it
maybe you won’t so anyways that’s it
maybe you won’t so anyways that’s it were there simple hello world example in
were there simple hello world example in
were there simple hello world example in the next tutorial we’re gonna talk about
the next tutorial we’re gonna talk about
the next tutorial we’re gonna talk about this because that’s not quite right
this because that’s not quite right
this because that’s not quite right that’s a some sort of custom function
that’s a some sort of custom function
that’s a some sort of custom function there or a custom type rather that maybe
there or a custom type rather that maybe
there or a custom type rather that maybe you want to know how to make yourself
you want to know how to make yourself
you want to know how to make yourself eventually you’re gonna need to know so
eventually you’re gonna need to know so
eventually you’re gonna need to know so you’re gonna find out so that’s all
you’re gonna find out so that’s all
you’re gonna find out so that’s all we’re gonna be doing in the next
we’re gonna be doing in the next
we’re gonna be doing in the next tutorial if you’ve got questions
tutorial if you’ve got questions
tutorial if you’ve got questions comments concerns whatever
comments concerns whatever
comments concerns whatever feel free to leave them below otherwise
feel free to leave them below otherwise
feel free to leave them below otherwise I’ll see you in the next tutorial
”
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