and why am I here?” Who am I and why am I here?” Twitter: Twitter: @rowan_m @rowan_m Blog: Blog: http://merewood.org http://merewood.org GitHub: GitHub: https://github.com/rowan-m https://github.com/rowan-m Joind.in: Joind.in: http://joind.in/user/view/118 http://joind.in/user/view/118 IMDb: IMDb: http://www.imdb.com/name/nm1412348 http://www.imdb.com/name/nm1412348 Google+: Google+: https://plus.google.com/u/1/111813845727005160164 https://plus.google.com/u/1/111813845727005160164
is achieved, not when Perfection is achieved, not when there is nothing more to add, but there is nothing more to add, but when there is nothing left to take when there is nothing left to take away.” away.” Antoine de Saint-Exupéry Antoine de Saint-Exupéry
never going to be the best at everything to be the best at everything You don't need to burn out trying You don't need to burn out trying Other people will have to save you Other people will have to save you S S
OF YOU Tools are there to achieve goals Tools are there to achieve goals You are a professional, You are a professional, your tools are complicated your tools are complicated
OF YOU Tools are there to achieve goals Tools are there to achieve goals You are a professional, You are a professional, your tools are complicated your tools are complicated
OF YOU Tools are there to achieve goals Tools are there to achieve goals You are a professional, You are a professional, your tools are complicated your tools are complicated ^ ^ EMACS Hand EMACS Hand
Hawg; I blamed myself. The Hole I never blamed the Hole Hawg; I blamed myself. The Hole Hawg is dangerous because it does exactly what you tell it to. Hawg is dangerous because it does exactly what you tell it to. Now I view them all with such contempt that I do not even Now I view them all with such contempt that I do not even consider them to be real drills--merely scaled-up toys consider them to be real drills--merely scaled-up toys designed to exploit the self-delusional tendencies of designed to exploit the self-delusional tendencies of soft-handed homeowners who want to believe that they have soft-handed homeowners who want to believe that they have purchased an actual tool” purchased an actual tool” Neal Stephenson Neal Stephenson http://www.team.net/mjb/hawg.html http://www.team.net/mjb/hawg.html
or or 形 形 literally: "form") literally: "form") Deliberate, controlled, repeated Deliberate, controlled, repeated Code Kata – Code Kata – Dave Thomas Dave Thomas http://codekata.pragprog.com/2007/01/code_kata_backg.html http://codekata.pragprog.com/2007/01/code_kata_backg.html TDD Kata – TDD Kata – Roy Osherove Roy Osherove http://osherove.com/tdd-kata-1/ http://osherove.com/tdd-kata-1/
simple String calculator with a method: int Add(string numbers) int Add(string numbers) 1. 1. The method can take 0, 1 or 2 numbers, and will return their The method can take 0, 1 or 2 numbers, and will return their sum (for an empty string it will return sum (for an empty string it will return 0 0) for example “” or “ ) for example “” or “1 1” or ” or “ “1,2 1,2” ” 2. 2. Start with the simplest test case of an empty string and move to Start with the simplest test case of an empty string and move to 1 and two numbers 1 and two numbers 3. 3. Remember to solve things as simply as possible so that you Remember to solve things as simply as possible so that you force yourself to write tests you did not think about force yourself to write tests you did not think about 4. 4. Remember to refactor after each passing test Remember to refactor after each passing test TDD KATA TDD KATA
Don't measure people Don't measure people (they'll just mess it up) (they'll just mess it up) A metric helps you achieve a goal, A metric helps you achieve a goal, don't chase the metric if you achieve the goal. don't chase the metric if you achieve the goal. X X
the smartest person in the room, If you're the smartest person in the room, you're probably not learning anything you're probably not learning anything
Software John Carmack – id Software float float Q_rsqrt Q_rsqrt( ( float float number number ) ) { { long long i i; ; float float x2, y x2, y; ; const float const float threehalfs threehalfs = = 1.5F 1.5F; ; x2 x2 = = number number * * 0.5F 0.5F; ; y y = = number number; ; i i = = * * ( ( long long * * ) ) &y &y; ; // evil floating point bit level hacking // evil floating point bit level hacking i i = = 0x5f3759df 0x5f3759df - ( - ( i i >> >> 1 1 ); ); // what the fuck? // what the fuck? y y = = * * ( ( float float * * ) ) & &i i; ; y y = = y y * * ( ( threehalfs threehalfs - ( - ( x2 x2 * * y y * * y y ) ); ) ); // 1st iteration // 1st iteration // y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed // y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed return return y y; ; } }
Software John Carmack – id Software float float Q_rsqrt Q_rsqrt( ( float float number number ) ) { { long long i i; ; float float x2, y x2, y; ; const float const float threehalfs threehalfs = = 1.5F 1.5F; ; x2 x2 = = number number * * 0.5F 0.5F; ; y y = = number number; ; i i = = * * ( ( long long * * ) ) &y &y; ; // evil floating point bit level hacking // evil floating point bit level hacking i i = = 0x5f3759df 0x5f3759df - ( - ( i i >> >> 1 1 ); ); // what the fuck? // what the fuck? y y = = * * ( ( float float * * ) ) & &i i; ; y y = = y y * * ( ( threehalfs threehalfs - ( - ( x2 x2 * * y y * * y y ) ); ) ); // 1st iteration // 1st iteration // y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed // y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed return return y y; ; } } http://www.beyond3d.com/content/articles/8/ http://www.beyond3d.com/content/articles/8/
took working with John Carmack and other It took working with John Carmack and other high productivity programmers and admitting high productivity programmers and admitting that they were way more productive than me that they were way more productive than me before I really understood how much more before I really understood how much more productive I could be.” productive I could be.” Brian Hook Brian Hook http://bookofhook.blogspot.co.uk/2013/03/smart-guy-productivity-pitfalls.html http://bookofhook.blogspot.co.uk/2013/03/smart-guy-productivity-pitfalls.html
The Dude abides.” Being passionate and authoritative Being passionate and authoritative is not the same as being an angry asshole is not the same as being an angry asshole
FUCK UP!” Mauro, SHUT THE FUCK UP!” “ “To make matters worse, commit f0ed2ce840b3 is clearly total and utter To make matters worse, commit f0ed2ce840b3 is clearly total and utter CRAP even if it didn't break applications.” CRAP even if it didn't break applications.”
FUCK UP!” Mauro, SHUT THE FUCK UP!” “ “To make matters worse, commit f0ed2ce840b3 is clearly total and utter To make matters worse, commit f0ed2ce840b3 is clearly total and utter CRAP even if it didn't break applications.” CRAP even if it didn't break applications.” “ “Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious garbage and idiocy” garbage and idiocy”
FUCK UP!” Mauro, SHUT THE FUCK UP!” “ “To make matters worse, commit f0ed2ce840b3 is clearly total and utter To make matters worse, commit f0ed2ce840b3 is clearly total and utter CRAP even if it didn't break applications.” CRAP even if it didn't break applications.” “ “Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious garbage and idiocy” garbage and idiocy” “ “And you've shown yourself to not be competent in this issue, so I'll And you've shown yourself to not be competent in this issue, so I'll apply it directly and immediately myself.” apply it directly and immediately myself.”
FUCK UP!” Mauro, SHUT THE FUCK UP!” “ “To make matters worse, commit f0ed2ce840b3 is clearly total and utter To make matters worse, commit f0ed2ce840b3 is clearly total and utter CRAP even if it didn't break applications.” CRAP even if it didn't break applications.” “ “Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious garbage and idiocy” garbage and idiocy” “ “And you've shown yourself to not be competent in this issue, so I'll And you've shown yourself to not be competent in this issue, so I'll apply it directly and immediately myself.” apply it directly and immediately myself.” “ “Fix your f*cking "compliance tool", because it is obviously broken.” Fix your f*cking "compliance tool", because it is obviously broken.”
FUCK UP!” Mauro, SHUT THE FUCK UP!” “ “To make matters worse, commit f0ed2ce840b3 is clearly total and utter To make matters worse, commit f0ed2ce840b3 is clearly total and utter CRAP even if it didn't break applications.” CRAP even if it didn't break applications.” “ “Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious Shut up, Mauro. And I don't _ever_ want to hear that kind of obvious garbage and idiocy” garbage and idiocy” “ “And you've shown yourself to not be competent in this issue, so I'll And you've shown yourself to not be competent in this issue, so I'll apply it directly and immediately myself.” apply it directly and immediately myself.” “ “Fix your f*cking "compliance tool", because it is obviously broken.” Fix your f*cking "compliance tool", because it is obviously broken.” Linus Torvalds Linus Torvalds https://lkml.org/lkml/2012/12/23/75 https://lkml.org/lkml/2012/12/23/75
store near my house that There's a grocery store near my house that I don't like. It's small, dark, and dirty, and it I don't like. It's small, dark, and dirty, and it just makes me uncomfortable. So I never go just makes me uncomfortable. So I never go there. It doesn't make me angry, it doesn't there. It doesn't make me angry, it doesn't offend me, it's just not a place I want to be; offend me, it's just not a place I want to be; there are other grocery stores around that I there are other grocery stores around that I like better. It's not worth my energy to try like better. It's not worth my energy to try and change the place.” and change the place.” Elizabeth Naramore Elizabeth Naramore http://naramore.net/blog/uncomfortable http://naramore.net/blog/uncomfortable
Being rational and accepting Being rational and accepting does not mean giving up your principles does not mean giving up your principles Attack ideas, not people Attack ideas, not people
Being rational and accepting Being rational and accepting does not mean giving up your principles does not mean giving up your principles Deliver bad news early Deliver bad news early
Being rational and accepting Being rational and accepting does not mean giving up your principles does not mean giving up your principles Learn to say “no” Learn to say “no”
Being rational and accepting Being rational and accepting does not mean giving up your principles does not mean giving up your principles Ask the DFQs Ask the DFQs
Podcasts Podcasts Mailing lists Mailing lists Bug reports Bug reports User groups User groups Mentoring Mentoring Patches Patches Pull requests Pull requests Adding tests Adding tests Money Money Pizza and beer Pizza and beer Equipment Equipment Build RCs Build RCs Invest in employees Invest in employees Test-fests Test-fests Sponsor stuff Sponsor stuff Buy subscriptions Buy subscriptions Ok, you can be a hero – just not on your own Ok, you can be a hero – just not on your own
Podcasts Podcasts Mailing lists Mailing lists Bug reports Bug reports User groups User groups Mentoring Mentoring Patches Patches Pull requests Pull requests Adding tests Adding tests Money Money Pizza and beer Pizza and beer Equipment Equipment Build RCs Build RCs Invest in employees Invest in employees Test-fests Test-fests Sponsor stuff Sponsor stuff Buy subscriptions Buy subscriptions Ok, you can be a hero – just not on your own Ok, you can be a hero – just not on your own WRITE CODE WRITE CODE
put a smile on that face.” Let's put a smile on that face.” This is a career, a profession, a life-style choice, This is a career, a profession, a life-style choice, not just a 9 'til 5 job not just a 9 'til 5 job
BE AWESOME GO AND BE AWESOME MANNEQUIN FROM MANNEQUIN FROM DIRECTMANNEQUINS.CO.UK DIRECTMANNEQUINS.CO.UK - NO MANNEQUINS WERE HARMED IN THE MAKING OF THIS PRESENTATION. - NO MANNEQUINS WERE HARMED IN THE MAKING OF THIS PRESENTATION.
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