WEBVTT

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so we're let's get rid of the
conduct nabati counter but nothing

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like a reference to the current
 ok in the view so we don't

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want to have that anymore we
still passage here so that we

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can pass it two super method
 so that we can catch the

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view to the to the car that we
still need to do that we need

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to have that observers scene
but we don't need the actual

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reference to the
current you know

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so we trust we through the
really we got the collateral

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us problems we just delete them
here we really democrats easy

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in this case but it might
yeah if we deleted here

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we might problem yes so that
 doesn't work anymore no

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so what we need to do
here we said we want to

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switch from the push from the
from poor to the push and so

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we we would has we need to pass
 a value here and we will do

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that we just do that
and as we don't know

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or as we kind of we know something
 we know that is this is

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an integer value we are currently
 pulling here yes we know

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that but maybe we want to
attach this model to another

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at this you to another model
and then it might be floats

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actually what i
would do would be

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as for object here and then
 that could be anything

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that could be anything and then
 later on just because it ok

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is one way to do it we also
could convert just go for

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the and and and use that
that would be another

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way to do that then we
would be kind of we would

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need what comes from
the and then we would

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draw rein danele to the
value right yeah so we

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just say we just assume incident
 well actually but as i said

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we probably with need to kind of
type first two sometimes nothing

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so what i would do is we
kind of say that's the

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x value because it's
the exposition so

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let's create local
 variable and x

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and x this is a
constant value

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very important it did

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and actually now we can
 run into a problem

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here it is safe probably already
 c and all content you is no

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longer implementing are
observed so yet but we will

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may run into another
problem but we will come

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to that later so let's go
 to the user yourself

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well and here we need to do
 the same so we want to

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actually people kept
 how convenient

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so account of you
should be fine

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again and it takes an object
 here instance as as long

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as to assess the memory of because
 we know quality of the method

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and we need to pass
it something in and

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maybe let's just give it
a value here are zero

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creation we can
just pause so

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so it starts on the norm
 or upper left corner

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exactly so the process in we'll
 always the zero zero is the

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upper left on it and we
still have a role in the

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content of course because
 here we call cannot

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update method and we want
to just has to come here

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and now we should define
again from this let's

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run it and see if still works
 whether we really done

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refectory or whether we
props fresh something

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so yeah looks good it's there
 was so now we kind of

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we remove we remove the
reference to the to the

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model in the in the view
 and we switch from

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pull to push and basically
i mean it's not something

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that you need to do is just kind
 of we want to play the wrong

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little bit with the code and
show you what what's possible

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and what you can do what
recruit do is we should

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added flycatcher because someone
 malicious could just process

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yeah idea is
stupid enough

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has a string in so run
the code again over no

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in front of it have
enough we can take that

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and knowing terms
because we have

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a class cus exceptional
 so yeah we

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can not cost that's what happens
 here typecasting with that

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in the course so what we
 need to do is we say

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try this stuff

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and if the exception happens
 we character sketch

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the was called class
 costs exception

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ok steers sure

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how could it out

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and actually we can
print out something in

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because we want to know
something has happened

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so is tom's with different things
well i mean in the real problem

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we actually would low yeah off
that and not system operates

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on it but you would be happy if
you see something that something

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reveals would you choose
we should just ignore it

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i think i can get
messages nice one

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could also use local as measured
 do i mean there's a lot of

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things that you can use the
and now let's run it again

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and see what happens i mean it
should crash we still has the

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are also going to russia
lower but we won't see

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so we get the error message to
but the program is running and

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we can also click click click
in there it is and there is

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now we give the correct
value from our counter

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so it was so good thing
 to try catch things

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things that can
 go wrong so

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remove this again and
here we go on with that

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and now we still want to move
the logic from the controller

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into the model right yes and
i would suggest we kind of

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first rename this method and we
 can use the great refectory

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feature from eclipse here we name
 off there's also a shortcut

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for that and we we
manage and we call

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update cart and don't for
don't forget the first

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and to make refactoring
work so we update updated

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method namely in and it also
automatically updated methane

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over here we are is quite but we
 didn't change the logic yet

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it doesn't different namely i don't
 so it was not what we intended

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so we remove the
logic relief no

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there's no logic at all and
now of course it doesn't

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work anymore calls we
still need to remove

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the argument in it now
with promising methods

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and signature again and we
 don't need that count

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any longer which when increase
could afford to call increase

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com because that's what
 it does it we first

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because article ok now we can
still i mean we can do what you

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want you could rename it again
 but not of this became

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so yeah yeah let's just let's
 try that three run it

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and doesn't still
worked just sit down

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great factory let's
 see how far get

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well probably let's
 and a video