Erase range from a std::vector?

If my std::vector has 100 elements, and I only want to keep the first 10 and erase the rest, is there a convenient way 开发者_如何转开发to do this?

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Yes, there is an erase function that takes arguments for first and last.

v.erase(v.begin() + 10, v.end());

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vec.resize(10); // drops the rest (capacity remains the same)

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vec.erase(vec.begin() + 10, vec.begin() + 100);

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theVector.erase(theVector.begin() + 10, theVector.begin() + 100);