Uncle Bob said you should be a
professional with clean code.
2009-10-30 Ruby Sapporo Night vol.12
Ruby
Ruby SHIMADA Koji
2009 10 31

From Sapporo, with Love for Ruby.
2009 10 31

Photo by tmaeda
2009 10 31

Sapporo is a beautiful
provincial city of Japan.
Photo by enggul
2009 10 31

2009 10 31

2009 10 31

2009 10 31

2009 10 31

from Sapporo,
with Love for Ruby
Photo by darashi
2009 10 31

2009 10 31

LOCAL
2009 10 31

2009 10 31

2009 10 31

e rst edition
still in store.
2009 10 31

2009 10 31

Uncle Bob said you should be a
professional with clean code.
2009-10-30 Ruby Sapporo Night vol.12
Ruby
Ruby SHIMADA Koji
2009 10 31

2009 10 31

Today’s Topic:
2009 10 31

2009 10 31

Two Reasons:
2009 10 31

2009 10 31

on Kouichirou Eto’s Talk
2009 10 31

2009 10 31

http://capsctrl.que.jp/kdmsnr/wiki/bliki/?RailsConf2007
2009 10 31

Who’s who:
2009 10 31

Photo by chrishedgate
2009 10 31

Object Mentor Inc.
2009 10 31

2009 10 31

“Clean Code that works”
2009 10 31

2009 10 31

Clean Code that works, in
Ron Jefferies’ pretty phrase,
is the goal of Test-Driven
Development(TDD).
2009 10 31

2009 10 31

Single Responsibility
Open-Closed
Liscov Substitution
Interface Segregation
Dependency Inversion
2009 10 31

2009 10 31

✓
✓
✓
✓
2009 10 31

2009 10 31

2009 10 31

2009 10 31

2009 10 31

“is is a book about
programming. ”
2009 10 31

“is is a book about
good programming. ”
2009 10 31

- Jack W.Reeves
2009 10 31

✓
✓
2009 10 31

2009 10 31

2009 10 31

2009 10 31

2009 10 31

photo by sunflowerdave
2009 10 31

2009 10 31

We who cut mere stones
must always be envisioning
cathedrals.
e Pragmatic Programmer
2009 10 31

2009 10 31

2009 10 31

Programmers are
Responsible Professionals.
- Martin Fowler
2009 10 31

Photo by chrishedgate
2009 10 31

✓
✓
✓
✓
2009 10 31

photo by foliosus
2009 10 31

photo by foliosus
2009 10 31

int d; //
int elapsedTimeDays;
int daysSinceCreation;
int daysSinceModification;
int fileAgeInDays;
photo by foliosus
2009 10 31

public List<int[]> getThem() {
List<int[]> list1 = new ArrayList<int[]>();
for (int[] x : the List)
if (x[0] == 4)
list1.add(x);
return list1;
}
photo by foliosus
2009 10 31

public List<Cell> getFlaggedCells() {
List<Cell> flaggedCells = new ArrayList<Cell>();
for (Cell cell : gameBoard)
if (cell.isFlagged())
flaggedCells.add(cell);
return flaggedCells;
}
photo by foliosus
2009 10 31

class DtaRcrd102 {
private Date genymdhms;
private Date modymdhms;
private final String pszqint = ...;
class Customer {
private Date generationTimestamp;
private Date modyficationTimestamp;
private final String recordid = ...;
photo by foliosus
2009 10 31

for (int j = 0; j < 34; j++) {
s += (t[j]*4/5);
}
int realDaysPerIdealDay = 4;
const int WORK_DAYS_PER_WEEK = 5;
int sum = 0;
for (int j=0; j < NUMBER_OF_TASKS; j++) {
int realTaskDays = taskEstimate[j] * realDaysPerIdealDay;
int realTaskWeeks = (realdays / WORK_DAYS_PER_WEEK);
sum += realTaskWeeks;
}
photo by foliosus
2009 10 31

if ((employee.flags & HOURLY_FLAG) &&
(employee.age > 65))
...
end
if employee.eligible_for_full_benefits?
...
end
photo by foliosus
2009 10 31

photo by foliosus
2009 10 31

✓
✓
✓
✓
2009 10 31

2009 10 31

acts_as_agile
http://gihyo.jp/dev/serial/01/agile
2009 10 31

Coplien and Martin Debate
TDD, CDD and Professionalism.
http://www.infoq.com/jp/interviews/coplien-martin-tdd_ja
2009 10 31

Crasmanship over crap
http://blogs.itmedia.co.jp/hiranabe/2008/08/agile2008-rober.html
2009 10 31

Uncle Bob said you should be a
professional with clean code.
2009-10-30 Ruby Sapporo Night vol.12
Ruby
Ruby SHIMADA Koji
2009 10 31

2009 10 31

Photo by darashi
2009 10 31

Workshop
Photo by mrkn
2009 10 31

Ruby Sapporo Night
2009 10 31

Junkudo Books
2009 10 31

02
Check It
Out!
2009 10 31

Join Us!
2009 10 31

2009 10 31

Ruby Sapporo Night
coming soon vol.13
2009 10 31