How Can I Properly Store Arrays Within a C Vector?

Proper Handling of Vector

In C , vectors are powerful containers for storing collections of objects. However, attempting to store arrays directly within a vector can lead to errors, as seen when declaring a vector of float arrays (vector) and encountering a conversion error during resizing.

This issue arises because arrays are not inherently supported as container elements. Containers require their stored elements to be copy-constructible and assignable, but arrays do not fulfill these requirements.

Solution: Utilizing Array Class Templates

To overcome this limitation, it is recommended to employ array class templates instead of raw arrays. C libraries such as Boost, TR1, and C 0x offer array templates that provide copy constructibility and assignability.

For instance, using the array class template provided by C 0x:

std::vector<std::array<double, 4>>

Alternatively, you can utilize the array templates incorporated in C TR1 or Boost libraries:

std::vector<std::tr1::array<double, 4>>
// or
std::vector<boost::array<double, 4>>

Custom Array Class (Optional)

You can also create your own array class that implements copy construction and assignment if desired, ensuring compatibility with container usage.

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