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I) H.Z.Ejector design and calculation of free exhaust gas flow,Shanghai Polytechnic University,China, 1982.II) Ejector design calculation,Shanghai Polytechnic University,China, 1982.III) The relationship of jet pressure and velocity in a multiple nozzle ejector,Changchun Engineering University,China, 1983.IV) The nozzle r.i.p.m. and energy rate of multiple nozzle,Shanghai Polytechnic University,China, 1984.
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This is the last book in the series, there is only one more book, and I intend to write it, in the mean time please enjoy reading my other books.!!!thanks.
Welcome to the popular physics books project. This website provides you with the books' contents. The books' contents are updated weekly. Feel free to share the site with your friends, and learn physics together.Q:
How can I have a vector holding a vector of pointers of dynamic objects?
I'm trying to use std::vector to hold a vector of pointers of dynamic objects. The vector of pointers will hold pointers of some int objects, and that vector will be a member variable of some class. I want to use the vector of pointers to contain an array of pointers to the dynamic objects themselves, then access them through indexing.
I'm having trouble understanding how to create the inner vector of pointers. From what I understand, the pointer may be reallocated at any time, so I must use a vector of pointers. I also want to be able to access the dynamic objects through indexing.
Can you please help?
A:
Is this the one you're looking for?
#include
#include
struct Obj
{
int value;
Obj(int value) : value(value)
{
}
~Obj()
{
}
};
int main()
{
std::vector> v;
v.push_back(std::unique_ptr(new Obj(1))); 01e38acffe
Category:Sustainable technologies
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