bug fix: adding data() function to return pointer to data of span

[saeedelsayed]

No description provided.

[saeedelsayed]

I had this error when trying to compile the native-cuda example:

/mallocMC/examples/native-cuda/source/main.cu(91): error: class "mallocMC::span<uint64_t>" has no member "data" memoryManager.free(a.data()); ^ /home/saids/mallocMC/examples/native-cuda/source/main.cu(92): error: class "mallocMC::span<uint64_t>" has no member "data" memoryManager.free(b.data()); ^

Please note that the begin() function is doing the same functionality as data() and can be used instead. However, data() is more expressive.

[chillenzer]

Please note that the begin() function is doing the same functionality as data() and can be used instead. However, data() is more expressive.

That's not quite true: They are identical on the implementation level but they have different semantics (by convention), compare begin and data. The former returns an iterator, the latter a pointer to the underlying data. As a C++ happens to fulfill the corresponding iterator concept, returning that pointer is semantically valid but not quite necessary for begin to have the correct semantics.

[chillenzer]

Well done! Thank you!