How to check if C++ vector is null

When programming with C++ in Linux, I usually declare this at the top of my code:

static const int nullptr = 0;

And use the constant “nullptr” to compare null pointers (remember that all null pointers = 0).

But when I am using vectors, I can’t use that. Instead, you can use their own function:

vec.empty()

Which returns true or false if the vector has elements or is empty, respectively.

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