SOFTWARE CRAFTSMANSHIP Building A Culture
For The Future <’ 34% ' /7 ¢ 1 “ ‘I-‘I GDG DevFest 2014 ' Lemi Orhan Er ' Developer Event in Istanbul ' A Agile Software Crafts

Lemi Orhan Ergin Agile Software
Craftsman Founder of Software Craftsmanship Turkey Scrum, Kanban ve XP Practitioner Developer, Architect, Trainer, Coach, Leader Sony 8. eBay Alumni [E @| emiorhan Q | emiorhanergin. com y @Iemiorhan

There are BIG CHALLENGES in
every profession

Some of them need years
of hardwork , . to succeed ‘ft. Rosetta was launched on 2 March 2004 4%‘ on an Ariane 5 rocket and reached the comet 67P on 6 August 2014, becoming the first spacecraft to orbit a comet.

Some of them seems easy
butneeds mastering In most countries locksmiths must follow strict set of rules and regulations. In many places it starts as apprentices and needs a degree from university.

Software Development has great challenges
too

What are the BIGGEST CHALLENGES
in software development profession?

P FESSI N LIE M
sets of discipline and minimum standards of behaviors turning development into a real profession

P FESSI N LIE M
instead of wasting time for writing excellent code, professionalism IS writing excellent code without wasting time

CRAFTSMANSHIP knowing how well you
perform you do your craft

PROFESSIONALISM CRAFTSMANSHIP is the suitcase
is the journey

Is it about knowing technologies?

amygmq mu| e zend socketio
json flak PM mongodb mysql git cu. l““'t Play ajax bash C android ¢# P| [sq| newrelic gran; allathe 5'33" ratpack alfresco webservices ¢“‘“mb9|' express“ 9° '55 seo P! l"‘°“ memcache i‘l“¢"! I mane hadoop jmx emu“: couchhase . xml "t""5 primefaces‘ Emmate 5“ 'a"a"°' rabbitmq jrubg java L N. behat red“ 3"9“'3"i5 akka javascript ‘°" jms django wordpress ost res - P clogsure spring ruby

It is about how well
you use them

SOFTWARE CRAFTSMANSHIP It is a
movement about getting better at software development particularly through gaining professional skills Russian rhythmic gymnast Irina Tchachina stretching in her warm-up before practice http: //en. wikipedia. org/ wiki/ Gymnastics

SOFTWARE CRAFTSMANSHIP It is about
building a culture for pasionate, disciplined and motivated people who aims to write well-crafted software and continuously deliver value

I 3. i, »_I I’.
fr“ _ l / .r' -"1 I r '1 {J i ‘ V57 . Is it true or false? Business do not care quality Business cares how fast you deliver to market

Quality is a must Business
cares getting value Everyone wants high quality software, no excep ions Build half a product, not a half-arsed product

Vii ’ ii t. ’
It is about creating an environment where software development is more predictable, gives better results, costs less and builds trust

,, — ‘ I‘ r
. . It ‘. - slt. , ! W‘ ' P’ SOFTWARE CRAFTSMANSHIP It is about writing beautiful code at least as fast as quick & dirty code

TR. ’-‘. D'i'IOi~'. ’-LE. !l‘.
G;| l.E SOFTM. ’-‘. « E DElIEl_OPli. iiEEi~'T DElEl_OPi! iEl~"i' CR. ’-‘. FTSll! i.’-‘. i~'Sl-ll? Processes and Individuals and A Community of Tools Interactions Professionals Comprehesive Working Well-Crafted Documentation Software Software Contract Customer Productive Negotiation Collaboration Partnership Following a Responding to Steadily Adding Plan Change Value

MINDS AND BEHAVI OF A
CRAFTSMAN

Abandon your preconceptions ( a‘
Scott W. Ambler Follow Why is it that people with little agile knowledge have strong opinions about when agile is(n‘t) applicable’?

Abandon learned despairs ‘T Lemi
Orhan Ergin . 3. : vi -El" L’? jl' Never say "it does not fit to our culture". You are a part of the culture and every culture can evolve and improve like you do.

l Pl l’: -.; *.li'
i ~“ii'i. .'* lqf“ i j :1 ‘ii : ‘ : ;+l‘. “'; .'” _I I. .-‘ Lemi Orhan Ergin Follow I‘ — C'L‘i. :'1 When you dig up successes, you find harmonized teams, even for individual sports or one man shows. . “ .3.) Phi 2 D 2 f'O‘A1 1?

Make sure you are fafleninlove
with your job , ~ 3

Learn like crazy

Leave our lGO having a
little bit is not a problem

Volunteer to share your knowledge
/ '

Be honest to yourself to
teammates to managers to customers to business

Be able to say N0
N0 N0 NO N0 N0 N0 N0 NO NO "0 "0 ND Never promise what you cannot do even under deadly pressure of deadlines

Don’t be the guy in
the corner

PRACTICES OF A
CRAFTSMAN

THE MANIFESTO

C0mpv: !ur*l. mot Vdfflfl disciplined
; : I5l'Zl' I! lIl'F! ? bis mall-ct: t': tra . t~d hignqtiiiiiiy sdtmir. 'c1low"g values arc ii-i~uy. i: ro set’ 1: ¢4.W(‘lIopl'l'L"". pr-ch snow 3 tr sory. we aim 10 inc is ‘tiny li. rctior-is. robes: slaolu it-r~: ;i<: ~ fI: ifi(Y‘tlI)Ifl Ci9.IKfIIf‘l1!6 Through ins WOIIK wt: u~. u shiln or lhr: .irt Dl. llZII: l.‘5.Ir7E'. (ECI1f‘009 . ir~c locus or I'M: I Trio code we develop 5 we oesigi-ec readable arderslandable clear we -: siec am: a rvays reaey to change 2 trio -rialym we prepare IS ur*ders! ardal: v‘e lu‘ly-covered data eo but clean a-a just-erougtl 3 The people cor! i~uot. i~. Iy ‘rr. irr- -nprovo sk. ti< 'criow bn“. I p1iIt: i:4.-s §", IVI1I"4!I( liromiscgi m’h 0‘i“lr! ’r : i-d p-uiciivniy . --. pm: l A .1d. ipl We know that IL' ing those values we noi may Eat ma wII achieve by iciloweg the pfIl'VL’tpIl! § below - Teams own i>~e ccice not If‘idlVIl3I. .i s [collective ownership] - use comoar-pzeam standavs for coc re and ralysis jslardaniil - Oefire your le: i'n's Us‘ '13!‘ of done for lasks stones tier-vuiors a-o releases [Definition of bone] . 0» not mlii sh codii u~Irr: .~i lI a toy | .'Nl. ‘G or p. i pn)g'. irl‘r"~j [Roluu Procodum] 2 it i"i‘. .iz! *efl. l.1lii. lr¥~‘. t'a~#~. ifii i - Tias code covnraqo . . monitored lrequei-i y and it -i-ad to be ii~c'ea<et: cor-sla~tiy [Toot Cctrongol — . harder ‘~ «log 05 lf‘+pol, Itf‘vllW"rll$r‘I ‘two’ or dltvulood, -' spa-C ‘ : coca "‘. tiId to Open source] . Folio» ' / esui _ r I [at A ‘cox '_l I '1 _ : ::: :." . :.I. :E I‘-"sf: r= .I’e: .I‘t.3:‘: ":. .': I i'. °J. ..'». ’.~. .“'. I_r-"" WI iU. _I_ $- - Design and and verily code by U‘I«ll"g T00 and B00 Wnling taslidbei was s the ma VWECA. s to for vriting lost; [TDD] EDD] - F0 on c i«. i~ Codi: pflflciplira Focus or "lg ru. ic. iblii pfoduli‘ Tr um: '. l!‘$I codu [Cl n c floPrin_'ip| a] - Learv aeveloprnenttocls such as your fits! '1 ‘ ‘ ads" 1:“ iv ‘.3 | . l ’_ »dIeaZuIE§ [cnfumarunip] ' i ! e-‘' e | | - Fovow best practices ~ release an: vi c tr~i - Mar to! the melncs of your code min cc_. ar-! ysi. . ¢-b. - . yoio] -. - - A. .tcri«. i-u it--.25 as much as possiclu i. i . i.. iys sii, ir: - my; lo aulornaet» as rruch as 90’ . Keep track . :nri Nrool Cor! ~uou. -. irarsgrnnoo A‘ t-, [keep the bc on i‘ [Er {groan l‘ tiles] _ ti. iy of i. cations v. i I . S"(¥IEV‘I7lé -- , ' , . ' slice '. . 1 as ' ' J . , . _ (Jot pet. fl‘, y I ‘ . _i - P’aCIICe mii L’; in II! N a _>q ex Li IQUII E 5 It [4 l [Pu to In 5 . - oont oe rel , ..ous: c.Z «Ow . . . '.. .u~. av‘ . .:i~i-oi. ,;y b: .¢f‘ usv r. , , ,t, ,,y mt e. '.. y H-5 our to. .. . ..r. . , —‘ - Pay Il‘C"! 'IC<II out» of your code as u. iny . i-. peso no Kouv the II of costs to work or in rm Iull/0 [Technical Debt] - . 1l‘I: L.‘-JCII? co1'IO0f‘t: rls K-iioosa lnciiorii Eirs as am. -icon . lr‘d Il: I CUM. " platforms . ir~d . ipc : ('5 use lI [nouns 'ty I Extoruiniliry] - have frequent shod releases to keep ire hill or ea: ri re ; -ase n r mum and to respovd to customer 'ast [snort Ralnsn] - Design iv-e arc’ 'eclufe oi your a: >cl. :atiors cloud corneal : >-e [Cloud Compatibility] - Excessive y use branches and low mode 5 to develop Ieaiures lrl'l>e'ner*t 'uies rd exporlmel-l for the rent reeases [bovolopmont Flow Modolo] - F"ep. tVL' | .lSI{"'OUQh out out Iifd are Mr pri-p. i-no ooc. imivr: .i'iui-5 P-oii~r ciiigrii-vi; arc tables rs me oi prstragritot--s [Agile Documentation] . Keep documei-l. itioos JG IDCJIIE . tr~t1 Corrie or arch vi: the -risluviw onus [Effie-ant Documentation] I Review the cocurrenzs l"3t are pcmareu ‘or you an: om-vitae 'eedDa: | to make it better [Document Review] - At the ~irne you lf‘lI a y wv-. e your code suc-ts‘ Always refactov the old cooe and o: oesigr suggest technical II"‘D'DV9I'IeI"I§ ‘.0 the team [Rnloclorlnq] - S"are your in-orvecoe via media or lra - ms to lean- by teaching [Knowledge Sharing] . it you riiivii . ii-y "lpfldIfY‘i*"f< i" I' s am you can r-rivrsv a I" rrmi I"iI' 1 c. iy Arvk ‘or Pr :2 [Collaboration] - As leixms pvmctivisy a. h.rre your knowledge take :4 zics oi your aciiora and mnigr: your team . "d your pl.1t'om‘a [Empowered Tounl] italiri [Automaflntion]

99% done tasks ET &
Defects and bugs _‘ g_. §,€_; ,;‘3f}. . g over-engineered designs ~ » - - - . . -. » p. . Complex designs ‘ ‘ ‘ ‘ ‘* '. ‘_j Workarounds Expensive or slow “ ‘_ Slow decision making _ 7 Unpractical processes ‘ 5 . § Heavy tools ‘ Long manual tests Task switching ' Over-time ‘ . ’ -4:_____L, _i_ Not resolving root causes ’ Waiting for approval " Not listening or asking . _i Not empowering Working with ass-holes ' oi. Losing knowledge Things not adding value

o Be N Console Code
Analysis Tool P"°fi°i°'? l'l Ve: ?:“: y2s: ,: with Your U : . Tools I ‘"5’ ' CI Server 'i IDE/ Editor --------------- '4 "" """ '. l ll’ if _l / 4 ’“ V ' _; _"-N9!‘ —:

Be responsible of . design
' architecture 7 ‘ quality ‘ testing g , _. perfo nce . ' main ance afions C actices ?

Clean Code PRINCIPLES Lean ARCHITECTURE
Emergent Simple; 7 DESIGN Code READABILITY

l, »_I . rT _
I / .r' -"1 I r '1 {J i ‘ V57 . Is it true or false? We have no time for tests We have to skip writing tests to deliver fast

‘res, you have time Do
ou really want '_i"rustrated cus enters and business and demotivated employees? Write comprehensive tests Automate as much as you can

|lll‘i Never release an unreviewed
code to production! I ~- -"-“ . A; I . ‘I I " ii '4 no-_— ——__— 1:‘ / _l——

REPRDDUCE THE BUGS WITH TESTS
BEFIIRE FIXING IT OR THE FIXED BUGS MAY RISE AGAIN! Q ‘Tr’ ’ 3} V O ’ ' o

L‘ , '3 - 5“
Musicians don’t practice «: " onstage, they perform Cur job is to perform 0-_. .'. §-n O r; —j

Practicing is the best way
how we improve our craft

How to Practice Ehaflenge Repeat
Feedback again and again and again and again

How to Practice No Pressure
do not complete the task but master it

Code Retreat is about practicing
mastering

Code Retreat is about learning
through pairing extending your confort zone no pressure of daily work “ experimenting learning new practices applying TDD thinking deeply about design building structures simple developing whenever required refactoring

35 people attended the dag
in Istanbul 6 continents 137 cities 20 timezones 2000+ developers 31 hours of coding November I5, 2014 Global Dag of Code Retreat coderetreat. org Coderetreat Community Network

P l I Everyone has
things to teach Everyone should be a speaker Everyone should participate No limitations on topics 7 No need to be experts After organizing 'i00-: - meetups, I realized that BBS might be the most effective catalyst of developer motivation

I " AND STUDYTHEli*lASTER| i‘!
G , ———. ——r——. ,. ~. ,—- ‘.4 '_. ‘I. E FIND A iviEi'! TUR TU GUIDE YDU

Joe O'Brien and Jim Weirich
while doing ruby code review https: //www. flickr. com/ photos/ fraserspeirs/3394902061

“H3651! the locksmith letting me
back into my house” by David Fiander MtpszlIVWW. flitlfhtoflllp| 'lIIt0SIl!0I1kgE¢| (I03557Z49ZZ “Hawk Conservancy Trust, Anilover" by Marilyn Peddle httpszlllnviir. fllckmomlpfiotoslmarllgn]aneI5lI11663279 “IISH” by Rgan Hcfiuire IittpzlIwivI. gratisographg. com “Thinking” by Alex Szgmanek | Ittps: IIvvvI. f|ickr. comlp_| iotoslI21II6931@ilDZIi558!43B878 “Master Yoda” by Hgzave http: I I hgzave. devlantart. comI artl Master-Yoda-14913524 All icons and drawings by Freepik http: IIwiiiiiI. flatli: on. com IMAGES

Lemi Orhan Ergin Agile Software
Craftsman lemiorhanergin. com @lemiorhan