Short presentation about leaving your comfort zone. Presented at devoxx 2013.

1. Disrupt
2
Grow
Konrad `ktoso` Malawski @ Devoxx 2013
konrad.malawski@java.pl
@ktosopl

2. fun fact

3. fun fact
This talk was a bet with a friend:

4. fun fact
This talk was a bet with a friend:
X: “I bet you won’t submit a soft talk!”

5. fun fact
This talk was a bet with a friend:
X: “I bet you won’t submit a soft talk!”
Me: “True - I normally wouldn’t! Let’s do it.”

6. fun fact
This talk was a bet with a friend:
X: “I bet you won’t submit a soft talk!”
Me: “True - I normally wouldn’t! Let’s do it.”
this talk is

7. fun fact
This talk was a bet with a friend:
X: “I bet you won’t submit a soft talk!”
Me: “True - I normally wouldn’t! Let’s do it.”
this talk is meta.

8. _@
Konrad `@ktosopl` Malawski

9. _@
Konrad `@ktosopl` Malawski

10. _@
Konrad `@ktosopl` Malawski

11. _@
Konrad `@ktosopl` Malawski

12. “disrupt”

13. “disrupt”
dis·rupt
•
To throw into confusion or disorder
•
To interrupt or impede the progress,
movement, or procedure of
•
To break or burst; rupture.

14. “disrupt”
dis·rupt
•
To throw into confusion or disorder
•
To interrupt or impede the progress,
movement, or procedure of
•
To break or burst; rupture.

15. “disrupt”

16. “disrupt”
•
don’t “just break stuff”
•
don’t “disrupt only to disrupt”
•
don’t ignore “helpful”
•
don’t disrupt others (most of the time)

17. “disrupt”

18. “disrupt”
•
experiment!
•
focus on “interesting”, not “new”
•
un-limit yourself

19. What’s the problem?

20. What’s the problem?
It’s when we stop learning.

21. My motivation

22. The good ol’ Dreyfus model…

23. The good ol’ Dreyfus model…

24. “Rise of the Expert Beginner”
www.daedtech.com/how-developers-stop-learning-rise-of-the-expert-beginner

25. “Rise of the Expert Beginner”
’s
It
tr
a
!
ap
www.daedtech.com/how-developers-stop-learning-rise-of-the-expert-beginner

26. “Rise of the Expert Beginner”
disrupt!
www.daedtech.com/how-developers-stop-learning-rise-of-the-expert-beginner

27. failing happens.

28. failing happens.

30. Sure, we have JUGs.

31. Sure, we have JUGs.
X: “We don’t have such a community for Haskell!”

32. Sure, we have JUGs.
X: “We don’t have such a community for Haskell!”
Y: “Here’s your meetup account. 1st meeting in a week?”

33. Sure, we have JUGs.
X: “We don’t have such a community for Haskell!”
Y: “Here’s your meetup account. 1st meeting in a week?”

34. delete(“smartest person in room problem”)

35. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”

36. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”

37. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”

38. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”

39. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:

40. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern

41. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1

42. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms

43. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms
• Strucure and interpretation of Computer programs

44. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms
• Strucure and interpretation of Computer programs
• Conflict-free Replicated Data Types

45. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms
• Strucure and interpretation of Computer programs
• Conflict-free Replicated Data Types
• The Typeclassopedia

46. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms
• Strucure and interpretation of Computer programs
• Conflict-free Replicated Data Types
• The Typeclassopedia
• Data Center TCP

47. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms
• Strucure and interpretation of Computer programs
• Conflict-free Replicated Data Types
• The Typeclassopedia
• Data Center TCP
• 50+ more…

48. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms
• Strucure and interpretation of Computer programs
• Conflict-free Replicated Data Types
• The Typeclassopedia
• Data Center TCP
• 50+ more…
• interesting!

49. delete(“smartest person in room problem”)
X: “My job is boring! Devs are weak!”
Me: “Find a reading club!”
Whitepapers we read:
• Deprecating the Observer pattern
• Online, Asynchronous Schema Change in F1
• HTM and Cortical Learning Algorithms
• Strucure and interpretation of Computer programs
• Conflict-free Replicated Data Types
• The Typeclassopedia
• Data Center TCP
• 50+ more…
• interesting!

50. delete(“smartest person in room problem”)

51. delete(“smartest person in room problem”)
Reading Clubs
Code Retreats
Hackathons
Online Courses (Coursera?!)
Open Spaces
Code Dojos
Prepared Kata
Un-Conferences
BOFs
Corridor Discussions
Something else!

52. Disruptive company structure
20 CEOs in one Company
https://softwaremill.com/20-ceos-in-one-company/

53. Disruptive company structure
20 CEOs in one Company
https://softwaremill.com/20-ceos-in-one-company/

54. Disruptive company structure
20 CEOs in one Company
•
•
•
•
No managers!
Full transparency!
Fully distributed company!
Trust, responsibility & awesome!
https://softwaremill.com/20-ceos-in-one-company/

55. Disruptive company structure
!!
!
re
o
an
c
20 CEOs in one Company
m
u
o !
en
y ”,
ev
en at arn
wh e th
le
t
en don and
om re,
re
!
m e
a )!
t
a
h omp uys
Th en t c ls g
Be then signa • No managers!
“
d by 37
• Full transparency!
an ok
(bo
• Fully distributed company!
!
• Trust, responsibility & awesome!
!
!
!
https://softwaremill.com/20-ceos-in-one-company/

56. Determination

57. And a “do” attitude

58. And a “do” attitude
X: “What’s the company policy? Can I go to this conference?”

59. And a “do” attitude
X: “What’s the company policy? Can I go to this conference?”
Y: ”
”

60. And a “do” attitude
X: “What’s the company policy? Can I go to this conference?”
Y: ”
”

61. And a “do” attitude
X: “What’s the company policy? Can I go to this conference?”
Y: ”
”

63. http://blog.geecon.org/2013/03/lots-of-fun-at-geecon-4-kids.html

64. really “nerdy” “hackers”
teaching kids
how to code.
!
Everybody learned a lot!
http://blog.geecon.org/2013/03/lots-of-fun-at-geecon-4-kids.html

65. really “nerdy” “hackers”
teaching kids
how to code.
!
Everybody learned a lot!
http://blog.geecon.org/2013/03/lots-of-fun-at-geecon-4-kids.html

66. Arduino’s on Women’s Day
http://hackerspace-krk.pl/?lang=en

67. Introvert as a waiter

68. Introvert as a waiter
Felt more like

69. Introvert as a waiter
Felt more like
, not as cool as

70. Try living somewhere else
http://en.wikipedia.org/wiki/Dymaxion_map

71. Try living somewhere else
Bold statement?
http://en.wikipedia.org/wiki/Dymaxion_map

72. Try living somewhere else
Bold statement?
http://en.wikipedia.org/wiki/Dymaxion_map

74. functional
http://www.brics.dk/RS/96/37/BRICS-RS-96-37.pdf

75. functional
// Figure 3, page 7!
trait BinomialHeap extends Heap {!
!
type Rank = Int!
case class Node(x: A, r: Rank, c: List[Node])!
override type H = List[Node]!
!
protected def root(t: Node) = t.x!
protected def rank(t: Node) = t.r!
protected def link(t1: Node, t2: Node): Node = // t1.r==t2.r!
if (ord.lteq(t1.x,t2.x)) Node(t1.x, t1.r+1, t2::t1.c) else Node(t2.x, t2.r+1, t1::t2.c)!
protected def ins(t: Node, ts: H): H = ts match {!
case Nil => List(t)!
case tp::ts => // t.r<=tp.r!
if (t.r<tp.r) t::tp::ts else ins(link(t, tp), ts)!
}!
!
override def empty = Nil!
override def isEmpty(ts: H) = ts.isEmpty!
!
override def insert(x: A, ts: H) = ins(Node(x,0,Nil), ts)!
override def meld(ts1: H, ts2: H) = (ts1, ts2) match {!
case (Nil, ts) => ts!
case (ts, Nil) => ts!
case (t1::ts1, t2::ts2) =>!
if (t1.r<t2.r) t1::meld(ts1,t2::ts2)!
else if (t2.r<t1.r) t2::meld(t1::ts1,ts2)!
else ins(link(t1,t2),meld(ts1,ts2))!
}!
http://www.brics.dk/RS/96/37/BRICS-RS-96-37.pdf

76. functional

77. functional
X: “But I know functional programming!”

78. functional
X: “But I know functional programming!”
Y: “Great! Try something different!”

79. logic - prolog

80. logic - prolog
likes(mary, food).

81. logic - prolog
likes(mary, food).
likes(mary, wine).

82. logic - prolog
likes(mary, food).
likes(mary, wine).
likes(john, wine).

83. logic - prolog
likes(mary,
likes(mary,
likes(john,
likes(john,
food).
wine).
wine).
mary).

84. logic - prolog
likes(mary,
likes(mary,
likes(john,
likes(john,
food).
wine).
wine).
mary).

85. logic - prolog
likes(mary,
likes(mary,
likes(john,
likes(john,
food).
wine).
wine).
mary).
| ?- likes(mary,food).

86. logic - prolog
likes(mary,
likes(mary,
likes(john,
likes(john,
food).
wine).
wine).
mary).
| ?- likes(mary,food).
yes.

87. logic - prolog

88. logic - prolog

89. logic - prolog
reverse(List, Reversed) :-

90. logic - prolog
reverse(List, Reversed) :reverse(List, [], Reversed).

91. logic - prolog
reverse(List, Reversed) :reverse(List, [], Reversed).

92. logic - prolog
reverse(List, Reversed) :reverse(List, [], Reversed).
reverse([], Reversed, Reversed).

93. logic - prolog
reverse(List, Reversed) :reverse(List, [], Reversed).
reverse([], Reversed, Reversed).

94. logic - prolog
reverse(List, Reversed) :reverse(List, [], Reversed).
reverse([], Reversed, Reversed).
reverse([Head|Tail], SoFar, Reversed) :-

95. logic - prolog
reverse(List, Reversed) :reverse(List, [], Reversed).
reverse([], Reversed, Reversed).
reverse([Head|Tail], SoFar, Reversed) :reverse(Tail, [Head|SoFar], Reversed).

97. From “I won’t use that!”,

98. From “I won’t use that!”,
To “That helped me later on!”

99. From “I won’t use that!”,
To “That helped me later on!”
prolog (1972) !
!
inspired datalog (1977)!
!
datomic (2012)

100. Tons and tons more…
The point being… Have a “quick look” into other things!

101. Tons and tons more…
Erlang, Haskell, Scala, Prolog, Standard ML, OCaml,
Go, JavaScript, TypeScript, Pascal, ADA, Common Lisp,
Fortress, F#, Eiffel, Cobol, R, D, Ruby, C++, Python,
Clojure, ELM, Scala, and lot’s of emerging languages!
or maybe read about VHDL!
The point being… Have a “quick look” into other things!

102. roll-your-own

103. roll-your-own

104. roll-your-own
X: “I know all these languages!”

105. roll-your-own
X: “I know all these languages!”
Y: “Awesome! Let’s implement one!”

106. roll-your-own
X: “I know all these languages!”
Y: “Awesome! Let’s implement one!”

107. !
// todo very naive still - can only return a string literal!
val l0 = new Label!
mv.visitLabel(l0)!
mv.visitLineNumber(10, l0) // todo random number here...!
mv.visitLdcInsn(s.substring(1, s.length-1)) // todo only handling one value for now!
mv.visitInsn(ARETURN)!
val l1 = new Label!
mv.visitLabel(l1)!
mv.visitLocalVariable("this", "Lpl/project13/jo/" + pack + ";", null, l0, l1, 0)!
roll-your-own
}!
X: “I know all these languages!”
Y: “Awesome! Let’s implement one!”

108. roll-your-own
!
X: “I know all these languages!”
Y: “Awesome! Let’s implement one!”
X: “Uhm, I meant spanish!”

109. roll-your-own
If you’re into that, start out with Charlie Nutter’s:
https://github.com/headius/indy_deep_dive

110. window management

111. window management

112. window management
X: “How do you manage your windows?”

113. window management
X: “How do you manage your windows?”
Y: “Oh, I program my window layouting system”

114. window management
X: “How do you manage your windows?”
Y: “Oh, I program my window layouting system”
X: “Awesome, show me!”

115. tiling window management <<= XMonad

116. tiling window management <<= XMonad

117. culture differences

118. culture differences
in places I lived

119. A road-trip style vacation
Although mine wasn’t as “exotic” as other’s :-)

120. culture differences ( )

121. culture differences ( )
(don’t generalise, but be aware of it)

122. culture differences ( )
(don’t generalise, but be aware of it)

123. culture differences ( )
(don’t generalise, but be aware of it)
Example from my work-life:

124. culture differences ( )
(don’t generalise, but be aware of it)
Example from my work-life:
very direct!
historically cunning!
(because of old. communism gov.)

125. culture differences ( )
(don’t generalise, but be aware of it)
Example from my work-life:
very direct!
not direct, it’s being polite!
historically cunning!
historically peace > personal stuff
(because of old. communism gov.)

126. culture differences ( )
(don’t generalise, but be aware of it)
Example from my work-life:
very direct!
not direct, it’s being polite!
historically cunning!
historically peace > personal stuff
(because of old. communism gov.)
And it’s the same with other countries!!
Everybody has different “styles” of interaction.!
!
And software is a lot of human interaction.

127. back to now()

128. back to now()
You’re at

129. back to now()
You’re at
Jump out of your comfort zone.!
!
Try a “weird” session!

130. Just do it.

131. Just do it.
You’ll get a simple “thanks”.!
!
And that’s the best.

132. Just do it.
You’ll get a simple “thanks”.!
!
And that’s the best.

133. groups:!
sckrk.com
hackerspace-krk.pl
java.pl
gdgkrakow.pl
meetup.com/Paper-Cup
!
images:
XKCD
zen.pencils.com
“Golden Boy” manga / anime
!
kudos & links:!
Adam Pohorecki for SCKRK
SoftwareMill for being so flat
All friends that helped to create our communities
Erik Dietrich for his blog @ daedtech.com (expert beginner post)
http://en.wikipedia.org/wiki/Ralph_Waldo_Emerson

134. thank you!
LIFE
IS
STUDY!
BIO:
KONRAD
MALAWSKI
!
T: KTOSOPL
GH: KTOSO
BLOG.PROJECT13.PL
GEECON.ORG
@
DEVOXX 2013
PREFERRED
TYPING:
!
STRONG
AND
STATIC
!
!
TWITTER:
@KTOSOPL
FAVOURITE
MONAD:
!
FUTURE[+A]