General
Design
Develop
Test

General

Campsite Rule

Rationale
Applying the principle
References

Code Over Comments

Rationale
Examples
- Example that breaks the rule
- Example that doesn’t break the rule

Keep It Simple, Silly

References

Log Only What's Needed

Rationale

Non-Defensive

Overly defensive example
Less defensive example

Robustness Principle

Be conservative in what you send
Be liberal in what you accept
References

YAGNI - You Ain't Gonna Need It

Rationale
What this means

Design

Composition over Inheritance

Rationale
Examples
- Example that uses inheritance
- Example that uses composition
References

Immutability

Rationale
Implications
Examples
- Example of mutable
- Example of immutable
References

Law of Demeter

Rationale
Examples
- Example that breaks the law
- Example that doesn’t break the law
References

Nulls & Null Objects

Example
References

Open/Closed Principle

Rationale
Examples
- Example that breaks the rule
- Example that doesn’t break the rule
References

Single Responsibility Principle

Rationale
Examples
- Example that breaks the rule
- Example that doesn’t break the rule
References

Small

Smells
- Large number of constructor arguments
- Private static methods

Tiny Types

Rationale
Implications
Stronger typing example
Cohesive functionality example
References

Develop

Commit Often

Rationale
References

Don't Push On Broken Builds

Rationale

Test

API Integration Tests

DAMP not DRY

Example

Testing Pyramid

Rationale
References

Develop

Commit Often

Commit small amounts of code and do it frequently.

Don't Push On Broken Builds

If the build is red/broken you must not check in. Help fix the issue instead.

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