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Alex Rivera
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I was trying to learn and adopt the copy-swap idiom following this thorough explanation on this question: the Copy-Swap Idiom . But I found some code I had never seen: using std::swap; // allow ADL in this example class dumb_array { public: // ... void swap(dumb_array& pOther) // nothrow { using std::swap; // allow ADL /* <===== THE LINE I DONT UNDERSTAND */ swap(mSize, pOther.mSize); // with the internal members swapped, swap(mArray, pOther.mArray); // *this and pOther are effectively swapped } }; what does using std::swap; mean inside the body of a function implementation ? what does ADL mean ?
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