[英]c++: Initialize vector of shared_ptr in constructor as different pointers
[英]Convert vector of shared_ptr into the vector of raw pointers in C++
我想知道是否有办法将共享指针的向量转换为原始指针的向量,而不是通过循环来做:
\\vecShared - initial vector of shared pointers
std::vector< double* > vecRaw;
for(unsigned int i=0; i<vecShared .size(); ++i)
vecRaw.push_back(vecShared[i].get());
如果有其他方法,使用这些方法有好处吗?
当然
vecRaw.reserve(vecShared.size());
std::transform(vecShared.cbegin(), vecShared.cend(), std::back_inserter(vecRaw),
[](auto& ptr) { return ptr.get(); });
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