Public Access
34 lines
1.2 KiB
Markdown
34 lines
1.2 KiB
Markdown
# Deep Modules
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From "A Philosophy of Software Design":
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**Deep module** = small interface + lots of implementation
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```
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┌─────────────────────┐
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│ Small Interface │ ← Few methods, simple params
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├─────────────────────┤
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│ │
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│ │
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│ Deep Implementation│ ← Complex logic hidden
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│ │
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│ │
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└─────────────────────┘
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```
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**Shallow module** = large interface + little implementation (avoid)
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```
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┌─────────────────────────────────┐
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│ Large Interface │ ← Many methods, complex params
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├─────────────────────────────────┤
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│ Thin Implementation │ ← Just passes through
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└─────────────────────────────────┘
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```
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When designing interfaces, ask:
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- Can I reduce the number of methods?
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- Can I simplify the parameters?
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- Can I hide more complexity inside?
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