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foreign

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[Music]

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and welcome back

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uh Keith is the co-founder and

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co-organizer of taipei.py the largest

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python User Group in Taiwan

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he's lead back and engineer at ishef and

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served as chairperson of python APAC in

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2015. and Keith is going to talk to us

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about code review for senior python

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Engineers so please give it up for Keith

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[Applause]

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so today we'll explore the two

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difference between a senior Python and 9

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years

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Thailand developers we'll also diving

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into a profound impact the experience

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and well-rounded participative can have

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honorable quality and later on

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production

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so whether you are an aspiring the real

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person or a seasoned experts I hope

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you'll find insights and the principles

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now we are going to describe

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sorry so today's agenda was very two

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points like first we'll uh

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first we are dive into the six key

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points I will see them pattern code

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review and the second we'll discuss

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about supportive environment and Tools

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around before requests okay

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feed vacation

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so Indiana is we won't go into how to

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details in this show talk and we don't

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have the right talk about a career

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framework which may be another talk and

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then of course we can discover how to

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find a good job in my how to learn

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people in 10 toes okay

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so have anyone do a call review before

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um

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let's make a few sure so I'll probably

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spill likewise report because someone

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may even have a reviewer called page for

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the newness kernel anyway and hi I'm

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Chris Young I just have introduced I'm

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from Taiwan and if you can you want to

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come let me you can find me later on at

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home walk okay look at my video uh

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imagination like my company is doing

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like polls season in the restaurant we

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have like I have like uh we doing the

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all the preparation and the handle

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translation for our iPad and we have

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some like HRS jungle and a variety of

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database my Sequel and the postgres and

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the mongodb radius I'm gonna okay

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so now back to our foreign

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right so yeah you need to get sense then

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to use this email address

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now it's more to the GitHub already so

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you can do it like your normal parties

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but it's it might still want to really

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it's like develop the sky there are many

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advantages like you can even see let's

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see pylons internals you can inform it

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so so and it was early early yesterday

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so

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like the first point here comments no we

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are going to uh the comments always

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about the core visibility so but

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sometimes it's even more important

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medical he to be honest good rather than

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just comment everywhere so let's see

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some example Maybe

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okay

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so for example like you need to guess

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your highest risk live call and also is

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Aboriginal code was available mean so

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like it's time to place the reader's

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patience become down every day

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so another example now we have some

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comments on the call so it makes sense a

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little better but coasters like them so

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so you need to read a comment and you

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just understand what the code is going

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to do okay

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sure let's compare another example so

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now uh now we have a mode it's pretty

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simple code to like you tell the build

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total we are going to have a variable

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naming and like iterates over the menu

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items that should be much easier clear

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right so it's like I think it's like

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senior driver's Day live to learn

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something okay so now back to a concise

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call

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so

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um

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so we like who who don't like a

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descriptive and

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purpose a previous call so back to

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another core example no it's just the

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same example before

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the culture variable just tells the

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purpose of your total right

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so

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so back to the

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key points now is naming a set for this

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creative and the purpose now we have

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unicorns and come back to the variables

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so like and so anybody thinks how to

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name the variable and the module in

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different files like you have a user in

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users apply you have like remember in

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cnn.pi it might be like

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how can you do the right choice or a

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better choice for your teammates how

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they can find easier to find out let's

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uh

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so like another light or suggestion you

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may try to regret those video search you

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just bonus

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so pattern name example so

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usually we are talking about purpose we

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read it in the code about purpose so in

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the line remember logic or in member UTS

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I think we are focused on what's the

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function want to do so when you look at

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the first one it repeats what is doing

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equal remember roles and he said

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function equivalent version but in a

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second

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if the employee list remembers is

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properly the purpose of this function

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want to do it okay so I think in more

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normally the second one will be a better

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choice

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so and somehow is just not just about

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code it went back to your even far your

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module naming is can be like you

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understand is instead of puncture or

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spec and documents

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okay

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so let's back to the dental python

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so if you haven't been scared before now

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you are going to do this again I mean it

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shows a lot of interesting course okay

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so we're just Frozen sandwich so like

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comments and naming you can have like

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it's very simple and beautiful since the

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principle we are going to have it

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and uh with ability and easy to explain

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and namespace like you know you it could

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be our diverse daily life

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so now let's go to six key points of the

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senior python code review

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so I think normally the senior theater

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just don't write a unusual code but

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sometimes I just found different reports

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they are and use impose variables and

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you are going to guess what's happening

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there but actually it's easy to avoid

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just by using some help later tools like

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fake age so for example someone Imports

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this but you have your remote started

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thinking somewhere it might be the CSS

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somewhere but no what and there is an

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ambiguous variable l what does mean what

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does it mean right okay

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huh so uh so that's why I say you might

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use a tool and like we can meet so when

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you do git commit you just check like

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your call with like you say use you

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break a channel code for me so it says

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this is imported when I use and the

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local variable error is assigned but

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never use it again okay and learn even

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though complaining about the biggest

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variable name oh cool let's enter but if

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you really want we can skip it anyway

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so another common point in life

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everywhere I searched

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python errors like and you have

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sometimes you may have like default

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function arguments in your your code

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like you use this in your function

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arguments or you modify this when you

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iterating over it and the last one I'm

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going to show

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is a real party real case over this year

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is an operation and someone usually like

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the the

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Lambda in a loop and I think okay you're

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going to do every iteration but in the

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end it only to the last one iteration so

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so we've we spend some time to find our

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case and wow it's a surprise in case

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like you might search me and like come

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and buy some people right

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so now everyone say no paper but I'm not

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sure if I will be read over the official

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documents and actually is can be like

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you find in Black in ISO or fake

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somewhere if someone has done it for you

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okay

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so this is an example like you can have

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the link in your editor so I filmed the

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senior daily life is like you have

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everything every arrows found very early

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in your editor in your convinced in your

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pull request so you find a errors as

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early as possible so this is like you

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have the fake Edge in your VIN editor

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foreign

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supportive environment and Tools around

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the power request

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okay

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so

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before the core review will let the

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price like documentation when someone

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like someone like coming message is safe

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self safe who knows but we don't really

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really comments every day but once you

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are going to check out the history it

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might be the last clue you can find in

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your code why it do this code because he

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didn't write the comments and you can

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not get even variables so combination it

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might be the simple only way to find add

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a lot of time okay and if you are lucky

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to find back to the poor request usage

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and let's go to and the last and you're

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going to find the 10 years ago documents

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special speak about what the module is

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doing so like we have like design review

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document for years so in in there we'll

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put person reasons about what is

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Portugal the CRM projects like like

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online ordering projects we have like

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how we want to improve implement the

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plan and we will often do we always do

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it for recording of course

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because we want it to find the errors

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and do a discussion early when we before

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the Improvement so I think the point so

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and later we have like design review

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templates and it's really helpful

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because it because for human is so hard

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to Define everything you are going to

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climb Mountain where you are going to

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bring with you so you have like this and

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checklist and they feel the temperature

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so you can find from the templates

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so like it might be like somehow you're

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going to have your API looks how you

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want to you have your TV model looks yes

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and there is there something performance

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review do you need a plan B if

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everything just doesn't work you're

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going to roll by your release like the

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heavy one so so right in the live if

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like the company going to IPO so you are

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going to have a security check for or

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even just paperwork can you check I I

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have done some security check anyway

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it's a good one and so like for this

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year we doesn't even have a developer

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design review even we even have the SI

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design review for someone going to

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deploy a light info changes so they are

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going to have like Plan B is very

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important for SI because

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since happens I think in si is even more

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seriously okay so okay and there you now

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when we have also like we have a Time

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evaluation templates this year a lot of

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other good one like every developer can

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have a design tablets to evaluate the

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speed in the projects it's a hard one

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but okay I think it was to think of it

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yeah you tell me some time okay so

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documentation for 10 years company May

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missions Google talk figma or something

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but

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that is okay

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so like

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anyone has decided in the dominance the

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company so can you raise your hand

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uh field okay so I was a CIA life

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Jenkins get action in in your building

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process and the city is like uh

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you have like Auto ottoman

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ottoman deploy your code to the

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production okay

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so it reduce the light pen for routine

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so you don't need to type in so much

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since to do early deploy and the levels

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one time it even save our system because

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AWS just like cannot really deploy the

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machines so luckily we just have a

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automation with the pro is CD the

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process so we just do some buttons and

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the service convert so I think it's also

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good to Rob us and Recovery it's like

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actually to for me I personally but if

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you don't have cicd you are how to be a

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senior dear person in your company

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because you need to marry billing so

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much since manually so how Focus to like

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frozen documents something like that so

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so you can have a CI in your code

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request so it's just like uh like

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building someone is going to reveal you

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not always a review of merging is black

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okay so make sure since the principle

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instead of like human communication or

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don't you can imagine that before I read

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something so and I also spell pipeline

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so there are many privileges like

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Jenkins girl actions

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AWS scope you and even for data there

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are some new services

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and they can like compare together use

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with click on me and Netflix since I saw

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black okay

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so the other one is essential Point like

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you we own even for data but I want to

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find the error more early so they are

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doing this kind of thing instead you

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deploy and you find office on a

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production that's not everyone that

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that's fine yes

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okay so uh

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now there's cold coverage is how medical

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lines in your repo have recovered like

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for example our main report headline 95

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courage is like I I ready to hear this

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this number so uh it's for us we have

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much confidence on deploy because we

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have like every time every pull request

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we check well find this light isn't the

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00:19:42,120 --> 00:19:49,020
test why is it are you sure this logic

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is really working because you haven't

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tested it so and then we do functional

346
00:19:51,840 --> 00:19:58,500
tests in our

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00:19:54,260 --> 00:20:02,580
pull requests and we add about 95 to 100

348
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coverage so and so it's easy to like for

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people to review they don't need to

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00:20:04,820 --> 00:20:11,460
they don't need to guess what this code

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that is work if you have already a test

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for it

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so there are many tools too so I

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encourage that type and Nicole cup and

355
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sonar Cube and there are some service

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you can use

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everywhere

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00:20:25,980 --> 00:20:31,620
so you have like a curry check in your

359
00:20:28,620 --> 00:20:36,360
pool request of course so this example

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00:20:31,620 --> 00:20:38,720
in our company like 95 this one is oh 95

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00:20:36,360 --> 00:20:41,940
is our project this this product is 100

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covered look you know the coverage page

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you don't see that 100 yeah

364
00:20:45,360 --> 00:20:50,940
so and we are more relief okay back to

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the general python again

366
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so see I encourage you we I think it

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helps to find arrows array and you can

368
00:20:59,400 --> 00:21:06,120
it's please find it find in your pull

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00:21:02,280 --> 00:21:08,520
request voice not cover and and if you

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00:21:06,120 --> 00:21:13,160
have document templates you can buy

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Force the rules in your organization yes

372
00:21:13,160 --> 00:21:17,940
so like that might be joke advising the

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jewel is everywhere even like country

374
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though so the preferably only one way to

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like show in your teamwork your

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organization the cicd document and

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00:21:27,840 --> 00:21:33,299
templates

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00:21:29,460 --> 00:21:35,760
so and nowadays the AI cancer so the

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00:21:33,299 --> 00:21:40,620
senior experience might be a challenge

380
00:21:35,760 --> 00:21:44,120
for us now so like are you senior more

381
00:21:40,620 --> 00:21:44,120
than judge Beauty something

382
00:21:46,760 --> 00:21:52,980
co-pilot all right anyway

383
00:21:49,760 --> 00:21:56,340
in Korean experience I think the real

384
00:21:52,980 --> 00:21:59,940
still the terminology is still working

385
00:21:56,340 --> 00:22:03,780
so it's like like it still tells the

386
00:21:59,940 --> 00:22:08,700
wrong answer so we still need to finger

387
00:22:03,780 --> 00:22:12,020
our life while and they cannot like is

388
00:22:08,700 --> 00:22:16,380
about like AWS

389
00:22:12,020 --> 00:22:18,780
info since but I always get around maybe

390
00:22:16,380 --> 00:22:21,840
I'm not good good prom Mountain anyway

391
00:22:18,780 --> 00:22:26,039
but every time you travel official

392
00:22:21,840 --> 00:22:29,280
attack is kind of help and at one time I

393
00:22:26,039 --> 00:22:31,919
even asked a direction and let something

394
00:22:29,280 --> 00:22:33,840
is even not on the official talk about

395
00:22:31,919 --> 00:22:37,799
let's say like did have probably going

396
00:22:33,840 --> 00:22:40,620
to songs in like April but it's just so

397
00:22:37,799 --> 00:22:42,720
hard to find out of your document and no

398
00:22:40,620 --> 00:22:47,220
not to mention the church if you never

399
00:22:42,720 --> 00:22:51,200
know buy it and my one day no no okay no

400
00:22:47,220 --> 00:22:55,020
and the light the sharing experienced

401
00:22:51,200 --> 00:22:57,299
the tour experiments with your team I

402
00:22:55,020 --> 00:23:01,320
think it's also good life someone in our

403
00:22:57,299 --> 00:23:04,140
team to give GitHub for Pilots for us so

404
00:23:01,320 --> 00:23:07,500
we we might learn for it and everybody

405
00:23:04,140 --> 00:23:12,900
get going okay

406
00:23:07,500 --> 00:23:16,620
so is teamwork and uh you know in our

407
00:23:12,900 --> 00:23:21,299
organization there's a key point about a

408
00:23:16,620 --> 00:23:24,000
senior is a mentorship so if we are very

409
00:23:21,299 --> 00:23:28,919
careful how you how you can help others

410
00:23:24,000 --> 00:23:32,059
or not is marry our key point of view

411
00:23:28,919 --> 00:23:35,940
and uh is that the official

412
00:23:32,059 --> 00:23:40,440
self-learning Ovation books or the

413
00:23:35,940 --> 00:23:43,380
latest AI iteration I think it's all

414
00:23:40,440 --> 00:23:46,980
helping like during the python Taiwan

415
00:23:43,380 --> 00:23:50,100
you may have a consideration

416
00:23:46,980 --> 00:23:53,940
all right the last summary is like

417
00:23:50,100 --> 00:23:57,720
actually I think the senior point is not

418
00:23:53,940 --> 00:24:00,960
not so important or it's more about how

419
00:23:57,720 --> 00:24:04,740
we be helpful to others so like

420
00:24:00,960 --> 00:24:07,559
mentorship or you help others or you

421
00:24:04,740 --> 00:24:10,080
have the icicially helping you so you

422
00:24:07,559 --> 00:24:12,840
find and you have yourself knowing like

423
00:24:10,080 --> 00:24:16,740
common errors so I think that's the

424
00:24:12,840 --> 00:24:20,039
point of this talk so the supporting

425
00:24:16,740 --> 00:24:23,280
environment tools and the final first

426
00:24:20,039 --> 00:24:26,100
error in very very first place is the

427
00:24:23,280 --> 00:24:27,480
key principle all about this story is

428
00:24:26,100 --> 00:24:29,159
going to take away

429
00:24:27,480 --> 00:24:32,560
so

430
00:24:29,159 --> 00:24:34,860
and thank you this is my talk today

431
00:24:32,560 --> 00:24:37,650
[Applause]

432
00:24:34,860 --> 00:24:40,759
foreign

433
00:24:37,650 --> 00:24:40,759
[Applause]