would always compile cleanly and also explicitly states that your conversion from std::vector::size_type to int was intended. Note that if the size of the vector is greater than the …

Oct 3, 2011 · vector<double>::size_type vector_size; vector_size = myVector.size(); Whereas in Java you might do. int vector_size; vector_size = myVector.size(); Both are inferior options in …

Mar 3, 2010 · I think John means that if you want some idea how much memory the vector (and contents) occupies, you should be looking at the capacity, not the size. "in-memory size of the …

Oct 3, 2012 · vector( size_type count, const T& value, const Allocator& alloc = Allocator()); explicit vector( size_type count ); cppreference.com is a much better reference as compared to …

What are the advantages (if any) of initializing the size of a C++ vector as well as other containers? Is there any reason to not just use the default no-arg constructor? Basically, are …

Dec 2, 2015 · A different aspect of the 'size' function you might find interesting: on Ubuntu 15.10, g++ 5.2.1, Using a 32 byte class UI224, the sizeof(UI224) reports 32 (as expected)

Oct 21, 2011 · It seems like it is a GNU keyword. In GCC's this page, they explain its use with the (vector_size(16)) attribute, saying: int foo __attribute__ ((vector_size (16))); causes the …

Oct 11, 2010 · If a compiler is not able to prove that the vector size is preserved (which, generally, is very difficult or even infeasible, such as in our case), then you will end up with unnecessary …

3.4.3 Qualified name lookup [basic.lookup.qual] 1 The name of a class or namespace member or enumerator can be referred to after the :: scope resolution operator (5.1) applied to a nested …

Jan 8, 2012 · With respect to the practically correct: the "best" approach to implementing std::vector<T> is to have the actually object store a pointer to T which is a pointer to the start …