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OOD by Mind Map: OOD
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OOD

When

Always

every time you write it

In Practice

spec is uncertain?, customers talk in endless circles

How

Goals

dependencies, loosely coupled

responsibilities, highly cohesive

boundaries, easily composible

context, context independent

Skills

OOD

testing

refactoring

In Practice

notice risk, increase, write code that guesses the future, decrease, arrange code to accommodate change

can't see clearly?, break into smaller pieces

What

Code

how it's arranged

Why

Lower Costs

how to know?, you are maintaining velocity

Raise Costs

under-design?, your ARRANGEMENT of code interferes with change

anticipatory-code?, your ANTICIPATORY code interferes with change, programmers talk in endless circles

Who

You

with your fingers on the keyboard

Where

Messages

define the API

Implementation

hide the mess