Fastest way to write large STL vector to file using STL

Question

I have a large vector (10^9 elements) of chars, and I was wondering what is the fastest way to write such vector to a file. So far I\'ve been using next code:

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Answer 1

Instead of writing via the file i/o methods, you could try to create a memory-mapped file, and then copy the vector to the memory-mapped file using memcpy.