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C++ Language/Indirection/SmartPointers/OwnershipCycle

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C++ Language
  1. Overview
  2. Preprocessing
    1. Macros
    2. Tokenization
    3. Preprocessing Strings
    4. Compile-time Constants
    5. Compile-time Assertions
    6. Conditional-Compilation
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  6. Indirection
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    5. Rvalue-References
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    2. STL: Standard Template Library
    3. Strings
    4. IOStreams
    5. Filesystem Access
    6. Multithreading
    7. RNG: Random Number Generator
  13. Obsolete Features

The std::weak_ptr<> type is for situations where you need access to the shared memory payload that is being collectively managed by several std::shared_ptr<>, but you don't want this std::weak_ptr<> to affect the reference count. A cyclic data structure is one example where that is needed.

Additional information about weak_ptr (includes interactive examples)

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