Summary
This episode demonstrates the practical importance of the noexcept specifier in C++ by showing how it affects std::vector's reallocation behavior. Jason illustrates how vectors grow by doubling capacity when needed, and how objects are copied rather than moved during reallocation unless their move constructors are marked noexcept. By properly marking move operations as noexcept, the standard library can perform more efficient moves instead of copies, significantly improving performance when containers need to reallocate memory.
Related C++ Standard Sections
This episode covers topics found in these sections of the C++ standard:
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[new.delete.single]58% match -
[new.delete.placement]57% match