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Design Recovery II. Informatics 122 Alex Baker. Cake Recovery – Opinions?. How difficult was this? Why?. Cake Recovery – Opinions?. How difficult was this? Why? What would have helped more: Access to BnA/Archstudio design docs Access to running code Another 5 days of time. - PowerPoint PPT Presentation
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Design Recovery II
Informatics 122
Alex Baker
Cake Recovery – Opinions?
How difficult was this? Why?
Cake Recovery – Opinions?
How difficult was this? Why?
What would have helped more:Access to BnA/Archstudio design docsAccess to running codeAnother 5 days of time
Cake Recovery – Opinions?
How difficult was this? Why?
What would have helped more:Access to BnA/Archstudio design docsAccess to running codeAnother 5 days of time
Rather have done something Jetris-like?
As bad as it looked?
Better or worse?
Our Perspective: Cons:
Can’t use the strategies I mentioned Don’t learn to use reverse engineering tools Hard work, might obscure obvious lessons Distracting
Our Perspective: Cons:
Can’t use the strategies I mentioned Don’t learn to use reverse engineering tools Hard work, might obscure obvious lessons Distracting
Pros: Forces focus on code More interesting comparisons More involved experience Realistic?
Design Recovery in Diamond
Goal
Dom Materials
Representation
Domain of Use
Knowledge
ActivityIdeas
concern
manipulatesinformscapturesenhances
Ideas from your documents Connection to the designers’ ideas
Your Designs
How well do you understand Cake?
What was your process?
IdeasHow did you find out?Was this a good idea for the designers?
Representations
Best approach?
Precision versus elegance
Multiple diagrams
Success?
How well do you understand it now?
How prepared would you be to implement changes?Add a new kind of thing?Make the boxes semi-transparent?Add double-click behavior?
Cake Screenshots
The Nature of Software Invisibility
Understanding 3rd party’s towers
Complexity If users want a program to do 30 different things, then
the program must do those 30 different things Elegance?
Conformity Changeability
[Brooks: No Silver Bullet]
Is this a good design?
Was it easy to understand? Would it have been easy to implement? Can it be expanded?
Is this a good design?
Was it easy to understand? Would it have been easy to implement? Can it be expanded?
What would you change?
What was the effect of using BnA?
Positive
What was the effect of using BnA?
Positive
Negative
What was the effect of using BnA?
Positive
Negative
The weight of (re)use
Cake Recovery – Useful?
Midterm Review
Good design / bad designTheseus and the Minotaur
Design patterns Design recovery
Possible Midterm Contents
Design improvement exerciseDesign principlesPatterns
Recovery principlesSpecific question about Cake (?)
Mid-Course Checkup
Lost?Critique?Create?
How do you design software?
Implementation?
Returning Assignment 2
