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Shared Pointers vs Unique Pointers | Shared Pointers
C++ Smart Pointers
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C++ Smart Pointers

C++ Smart Pointers

1. Introduction to Smart Pointers
2. Unique Pointers
3. Shared Pointers
4. Weak Pointers
5. References
6. Advanced topics

bookShared Pointers vs Unique Pointers

Shared pointers and unique pointers are both fundamental to modern C++ memory management. To determine when to choose one over the other, it’s important to understand their differences.

Shared Pointers
Unique Pointers
Ownership ModelAllows shared ownership across multiple areasEnforces unique ownership at a given time
Reference CountUses reference count to manage ownershipDoes not use reference count
OverheadModerate overhead due to reference countingMinimal overhead as no reference counting is needed
ComplexityCan be harder to manage due to shared ownership and potential circular referencesGenerally simpler ownership semantics
Use CasesUse when multiple parts need access to same object with complex lifetimeUse for most dynamic memory scenarios where sharing is not required
Which smart pointer type should you use if you want maximum performance and don’t intend to share dynamic objects?

Which smart pointer type should you use if you want maximum performance and don’t intend to share dynamic objects?

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Seção 3. Capítulo 4
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