On using std::vector<class type Foo> as raw array Foo []
Question
I know that vectors are guaranteed to have the same underlying memory layout as arrays. So for POD (plain-old-data) type like int , vector<int> a can be used as SomeCFun(&a[0], a.size()) when a is non-empty. I'd like to know that when the element type is (complex) Class type, does the trick still work safely?
2 answers
solution1
1 2012-07-20 02:18:19
是的，对于任何类型T ，都保证为真。
solution2
0 ACCPTED 2012-07-20 02:25:26
Yes, it'll work. An alternative is SomeCFun(a.data(), a.size()) - but whatever you prefer.
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