enhancing agile development through software assessment
DESCRIPTION
I used this set of slides for a talk I gave at the SCRUM Breakfast in Bern (March 2010)TRANSCRIPT
enhancing agile development
www.tudorgirba.com
with software assessment
moosetechnology.org
feedback is key
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feedback is key
forward engineering
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forward engineering
actual development}
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forward engineering
actual development}
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reve
rse e
ngin
eerin
g
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reve
rse
engi
neer
ing
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reve
rse
engi
neer
ing
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reve
rse
engi
neer
ing
assessment
assessment is a discipline
assessment should be continuous
assessment should be contextual
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{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
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McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
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{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
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McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
Lanza, Marinescu 2006
A God Class centralizes too much intelligence
ATFD > FEW
Class uses directly more than a
few attributes of other classes
WMC ! VERY HIGH
Functional complexity of the
class is very high
TCC < ONE THIRD
Class cohesion is low
AND GodClass
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{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
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{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
A picture tells
a thousand words
Not all pictures tell a
thousand words
Lanza, Ducasse 2003
System Complexity shows class hierarchies
Class Blueprint shows class internals
eDSM shows dependencies
Duplications shown side by side
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{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
}
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{
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{}
{
}
{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
}
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{
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{}
{
}
{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
moosetechnology.org
Lanza, Ducasse 2003
What is this made of?
What is this made of?
package 1
package 2
...
Class A
Class B
...
method M
method N
...
source code
}
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{}
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{
McCabe = 21
LOC = 75
3,000
NOM = 102classes select: #isGod ...
}
{
}
{
}
{}
{
}
{
reve
rse
engi
neer
ing
assessment
feedback is key
feedback is key
assessment is a discipline
assessment should be continuous
assessment should be contextual
assessment is a discipline
assessment must be continuous
assessment must be contextual
Tudor Gîrbawww.tudorgirba.com
creativecommons.org/licenses/by/3.0/