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![abstraction |əәbˈstrakʃ(əә)n|
noun [ mass noun ]
1 the quality of dealing with ideas rather than events: topics
will vary in degrees of abstraction.
• [ count noun ] something which exists only as an idea: the
question can no longer be treated as an academic abstraction.
2 freedom from full representation
in art:geometric abstraction has been a mainstay in her work.](https://image.slidesharecdn.com/slides-150219095439-conversion-gate01/85/Barely-Enough-Design-23-320.jpg)
![“Knowinadvancewhereyouaregoingtoputcertain
behaviours. […]Inshort,beforeyouwriteyourfirst
test,youhavetodreamupthe[boundaries]thatyou
wishyouhad.”
Uncle Bob
boundaries](https://image.slidesharecdn.com/slides-150219095439-conversion-gate01/85/Barely-Enough-Design-49-320.jpg)
![Dependency
Inversion
Principle
[Martin 02]
Behaviour
Collaborator
Collaborator
Role
Role](https://image.slidesharecdn.com/slides-150219095439-conversion-gate01/85/Barely-Enough-Design-50-320.jpg)
![/**
* @Route(service="controllers.skills")
*/
class SkillsController
{
private $competencyFinder;
private $raterFinder;
public function __construct(CompetencyFinder $competencyFinder)
{
$this->competencyFinder = $competencyFinder;
}
/**
* @Route("/skills", name="skills")
* @Template()
* Show the skill for the learners role
*/
public function indexAction()
{
return ['competencies' => $this->competencyFinder->findDictionary()];
}
}](https://image.slidesharecdn.com/slides-150219095439-conversion-gate01/85/Barely-Enough-Design-53-320.jpg)
![class Skill
{
private $skillChanges;
public static function rate($skill, Learner $learner, Rating $rating)
{
$skillChange = new SkillChangeEvent($skill, $learner, $rating);
$skill = new Skill();
$skill->skillChanges[] = $skillChange;
}
public function getSkillChanges()
{
return $skill->skillChanges;
}
}](https://image.slidesharecdn.com/slides-150219095439-conversion-gate01/85/Barely-Enough-Design-54-320.jpg)
Uploaded byMarcello Duarte
Barely Enough Design
The document discusses principles of software design, focusing on simplicity and responsibility-driven processes. It emphasizes the importance of encapsulation, object-oriented design, and test-driven development while advocating for thoughtful design commitments. Additionally, it mentions various programming concepts, such as messaging between objects and dependency inversion.
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Barely Enough Design
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- 11. class SomethingPeopleCallEntity { public functiongetABitOfThis() { return $this->aBitOfThis; } public function getABitOfThat() { return $this->aBitOfThat; } public function getABitOfTheOtherThing() { return $this->aBitOfTheOtherThing; } public function getSomeOfThis() { return $this->someOfThis; } public function getSomeOfThat() { return $this->someOfThat; } public function getSomeOfTheOtherThing() { return $this->someOfTheOtherThing; }
- 13. demeter For all classesC, and for all methods M attached to C, all objects to which M sends a message must be instances of classes associated with the following classes: 1.The argument classes of M (including C.) 2.The instance variable classes of C.
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- 23. abstraction |əәbˈstrakʃ(əә)n| noun [mass noun ] 1 the quality of dealing with ideas rather than events: topics will vary in degrees of abstraction. • [ count noun ] something which exists only as an idea: the question can no longer be treated as an academic abstraction. 2 freedom from full representation in art:geometric abstraction has been a mainstay in her work.
- 24. class TestRunner { public function__construct(ProgressFormatter $formatter) { $this->progressFormatter = $formatter; } public function run(Test $test) { try { $test->run(); $this->progressFormatter->markPass(); } catch (Exception $e) { $this->progressFormatter->markFail($e); } } }
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- 27. class NyanCatFormatter extendsProgressFormatter { }
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- 30. class TestRunner { public function__construct(Formatter $formatter) { $this->formatter = $formatter; } public function run(Test $test) { try { $test->run(); $this->formatter->markPass(); } catch (Exception $e) { $this->formatter->markFail($e); } } }
- 31. class NyanCat implementsFormatter { }
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- 35. «interface» Formatter + markPass() + markFail() TestRunner + run(:Test) Progress NyanCat …
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- 48. Course Students LessonsEnrol students Display outline/info Keeptrack of vacancies CRC
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- 51. class CompetencyFinder { private $learner; private$finder; public function __construct(Learner $learner, CompetencyDictionaryFinder $finder) { $this->learner = $learner; $this->finder = $finder; } public function findDictionary() { return $this->finder->findByLearnerRole($this->learner->getLearnerRole()); } }
- 52. interface CompetencyDictionaryFinder { /** * Getsthe dictionary for a particular role * * @param LearnerRole $role * @return InviqaLearningCompetencyDictionary */ public function findByLearnerRole(LearnerRole $role); }
- 53. /** * @Route(service="controllers.skills") */ class SkillsController { private$competencyFinder; private $raterFinder; public function __construct(CompetencyFinder $competencyFinder) { $this->competencyFinder = $competencyFinder; } /** * @Route("/skills", name="skills") * @Template() * Show the skill for the learners role */ public function indexAction() { return ['competencies' => $this->competencyFinder->findDictionary()]; } }
- 54. class Skill { private $skillChanges; publicstatic function rate($skill, Learner $learner, Rating $rating) { $skillChange = new SkillChangeEvent($skill, $learner, $rating); $skill = new Skill(); $skill->skillChanges[] = $skillChange; } public function getSkillChanges() { return $skill->skillChanges; } }
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