Any C++ experts in my timeline? Here's a problem: I have some code that uses a vector and references the start of the buffer with &v[0]. Seems to be common practice. However in some situations the vector is of size zero.
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Using an iterator and comparing with end before using it. Using vec.begin() with a zero size array is fine though, just not dereferencing it since it already equals vec.end(). Maybe those functions should be getting passed a pair of iterators or a range, not a pointer and a size.
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There's std::vector::data() instead of the &v[0] anti-pattern but using a pointer and pointer arithmetic to access a collection isn't idiomatic C++. Iterators are the old idiomatic style and ranges are the new modern style.